# Difference between revisions of "ParaView/Users Guide/List of filters"

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Clip with scalars. | Clip with scalars. Tetrahedra. | ||

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Copies geometry from first input. | Copies geometry from first input. Puts all of the arrays into the output. | ||

The Append Attributes filter takes multiple input data sets with the same geometry and merges their point and cell attributes to produce a single output containing all the point and cell attributes of the inputs. Any inputs without the same number of points and cells as the first input are ignored. The input data sets must already be collected together, either as a result of a reader that loads multiple parts (e.g., EnSight reader) or because the Group Parts filter has been run to form a collection of data sets.<br> | The Append Attributes filter takes multiple input data sets with the same geometry and merges their point and cell attributes to produce a single output containing all the point and cell attributes of the inputs. Any inputs without the same number of points and cells as the first input are ignored. The input data sets must already be collected together, either as a result of a reader that loads multiple parts (e.g., EnSight reader) or because the Group Parts filter has been run to form a collection of data sets.<br> | ||

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| | | | ||

If this property is set to 1, then the input cell data is passed through to the output; otherwise, only the generated point data will be available in the output. | If this property is set to 1, then the input cell data is passed through to the output; otherwise, only the generated point data will be available in the output. | ||

| 0 | |||

| | |||

Only the values 0 and 1 are accepted. | |||

|- | |||

| '''Piece Invariant'''<br>''(PieceInvariant)'' | |||

| | |||

If the value of this property is set to 1, this filter will request ghost levels so that the values at boundary points match across processes. NOTE: Enabling this option might cause multiple executions of the data source because more information is needed to remove internal surfaces. | |||

| 0 | | 0 | ||

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Compute a statistical model of a dataset and/or assess the dataset with a statistical model. | Compute a statistical model of a dataset and/or assess the dataset with a statistical model. | ||

This filter either computes a statistical model of a dataset or takes such a model as its second input. | This filter either computes a statistical model of a dataset or takes such a model as its second input. Then, the model (however it is obtained) may optionally be used to assess the input dataset.<br> | ||

This filter computes contingency tables between pairs of attributes. | This filter computes contingency tables between pairs of attributes. This result is a tabular bivariate probability distribution which serves as a Bayesian-style prior model. Data is assessed by computing <br> | ||

* the probability of observing both variables simultaneously;<br> | * the probability of observing both variables simultaneously;<br> | ||

* the probability of each variable conditioned on the other (the two values need not be identical); and<br> | * the probability of each variable conditioned on the other (the two values need not be identical); and<br> | ||

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| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

The input to the filter. | The input to the filter. Arrays from this dataset will be used for computing statistics and/or assessed by a statistical model. | ||

| | | | ||

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# "Model a subset of the data," creates an output table (or tables) summarizing a '''randomly-chosen subset''' of the input dataset; | # "Model a subset of the data," creates an output table (or tables) summarizing a '''randomly-chosen subset''' of the input dataset; | ||

# "Assess the data with a model," adds attributes to the first input dataset using a model provided on the second input port; and | # "Assess the data with a model," adds attributes to the first input dataset using a model provided on the second input port; and | ||

# "Model and assess the same data," is really just operations 2 and 3 above applied to the same input dataset. | # "Model and assess the same data," is really just operations 2 and 3 above applied to the same input dataset. The model is first trained using a fraction of the input data and then the entire dataset is assessed using that model. | ||

When the task includes creating a model (i.e., tasks 2, and 4), you may adjust the fraction of the input dataset used for training. | When the task includes creating a model (i.e., tasks 2, and 4), you may adjust the fraction of the input dataset used for training. You should avoid using a large fraction of the input data for training as you will then not be able to detect overfitting. The ''Training fraction'' setting will be ignored for tasks 1 and 3. | ||

| 3 | | 3 | ||

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The dataset must contain a point | The dataset must contain a point array with 1 components. | ||

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== | ==Curvature== | ||

This filter will compute the Gaussian or mean curvature of the mesh at each point. | |||

The Curvature filter computes the curvature at each point in a polygonal data set. This filter supports both Gaussian and mean curvatures.<br><br><br> | |||

; the type can be selected from the Curvature type menu button.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

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| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| ''' | | '''Curvature Type'''<br>''(CurvatureType)'' | ||

| | | | ||

This propery specifies which type of curvature to compute. | |||

| 0 | | 0 | ||

| | | | ||

The value must be | The value must be one of the following: Gaussian (0), Mean (1). | ||

|- | |- | ||

| ''' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the input to the Curvature filter. | |||

| | | | ||

| | |||

The selected object must be the result of the following: sources (includes readers), filters. | |||

The selected dataset must be one of the following types (or a subclass of one of them): vtkPolyData. | |||

|- | |- | ||

| ''' | | '''Invert Mean Curvature'''<br>''(InvertMeanCurvature)'' | ||

| | | | ||

If | If this property is set to 1, the mean curvature calculation will be inverted. This is useful for meshes with inward-pointing normals. | ||

| 0 | | 0 | ||

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| | |} | ||

==D3== | |||

Repartition a data set into load-balanced spatially convex regions. Create ghost cells if requested. | |||

The D3 filter is available when ParaView is run in parallel. It operates on any type of data set to evenly divide it across the processors into spatially contiguous regions. The output of this filter is of type unstructured grid.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | |||

|- | |- | ||

| ''' | | '''Property''' | ||

| '''Description''' | |||

| '''Default Value(s)''' | |||

| '''Restrictions''' | |||

|- | |||

| '''Boundary Mode'''<br>''(BoundaryMode)'' | |||

| | | | ||

This | This property determines how cells that lie on processor boundaries are handled. The "Assign cells uniquely" option assigns each boundary cell to exactly one process, which is useful for isosurfacing. Selecting "Duplicate cells" causes the cells on the boundaries to be copied to each process that shares that boundary. The "Divide cells" option breaks cells across process boundary lines so that pieces of the cell lie in different processes. This option is useful for volume rendering. | ||

| 0 | | 0 | ||

| | | | ||

The value must be one of the following: | The value must be one of the following: Assign cells uniquely (0), Duplicate cells (1), Divide cells (2). | ||

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| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the input to the D3 filter. | |||

| | | | ||

| | | | ||

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The selected dataset must be one of the following types (or a subclass of one of them): | The selected dataset must be one of the following types (or a subclass of one of them): vtkDataSet. | ||

|- | |- | ||

| ''' | | '''Minimal Memory'''<br>''(UseMinimalMemory)'' | ||

| | | | ||

If this property is set to 1, the D3 filter requires communication routines to use minimal memory than without this restriction. | |||

| | | 0 | ||

| | | | ||

Only the values 0 and 1 are accepted. | |||

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== | ==Decimate== | ||

This filter | Simplify a polygonal model using an adaptive edge collapse algorithm. This filter works with triangles only. | ||

The | The Decimate filter reduces the number of triangles in a polygonal data set. Because this filter only operates on triangles, first run the Triangulate filter on a dataset that contains polygons other than triangles.<br> | ||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

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| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| ''' | | '''Boundary Vertex Deletion'''<br>''(BoundaryVertexDeletion)'' | ||

| | | | ||

If this property is set to 1, then vertices on the boundary of the dataset can be removed. Setting the value of this property to 0 preserves the boundary of the dataset, but it may cause the filter not to reach its reduction target. | |||

| | | 1 | ||

| | | | ||

Only the values 0 and 1 are accepted. | |||

|- | |- | ||

| ''' | | '''Feature Angle'''<br>''(FeatureAngle)'' | ||

| | | | ||

This property specifies the input to the | The value of thie property is used in determining where the data set may be split. If the angle between two adjacent triangles is greater than or equal to the FeatureAngle value, then their boundary is considered a feature edge where the dataset can be split. | ||

| 15 | |||

| | |||

The value must be greater than or equal to 0 and less than or equal to 180. | |||

|- | |||

| '''Input'''<br>''(Input)'' | |||

| | |||

This property specifies the input to the Decimate filter. | |||

| | | | ||

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|- | |- | ||

| ''' | | '''Preserve Topology'''<br>''(PreserveTopology)'' | ||

| | | | ||

If this property is set to 1, the | If this property is set to 1, decimation will not split the dataset or produce holes, but it may keep the filter from reaching the reduction target. If it is set to 0, better reduction can occur (reaching the reduction target), but holes in the model may be produced. | ||

| 0 | | 0 | ||

| | | | ||

Only the values 0 and 1 are accepted. | Only the values 0 and 1 are accepted. | ||

|- | |||

| '''Target Reduction'''<br>''(TargetReduction)'' | |||

| | |||

This property specifies the desired reduction in the total number of polygons in the output dataset. For example, if the TargetReduction value is 0.9, the Decimate filter will attempt to produce an output dataset that is 10% the size of the input.) | |||

| 0.9 | |||

| | |||

The value must be greater than or equal to 0 and less than or equal to 1. | |||

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== | ==Delaunay 2D== | ||

Create 2D Delaunay triangulation of input points. It expects a vtkPointSet as input and produces vtkPolyData as output. The points are expected to be in a mostly planar distribution. | |||

The | Delaunay2D is a filter that constructs a 2D Delaunay triangulation from a list of input points. These points may be represented by any dataset of type vtkPointSet and subclasses. The output of the filter is a polygonal dataset containing a triangle mesh.<br><br><br> | ||

The 2D Delaunay triangulation is defined as the triangulation that satisfies the Delaunay criterion for n-dimensional simplexes (in this case n=2 and the simplexes are triangles). This criterion states that a circumsphere of each simplex in a triangulation contains only the n+1 defining points of the simplex. In two dimensions, this translates into an optimal triangulation. That is, the maximum interior angle of any triangle is less than or equal to that of any possible triangulation.<br><br><br> | |||

Delaunay triangulations are used to build topological structures from unorganized (or unstructured) points. The input to this filter is a list of points specified in 3D, even though the triangulation is 2D. Thus the triangulation is constructed in the x-y plane, and the z coordinate is ignored (although carried through to the output). You can use the option ProjectionPlaneMode in order to compute the best-fitting plane to the set of points, project the points and that plane and then perform the triangulation using their projected positions and then use it as the plane in which the triangulation is performed.<br><br><br> | |||

The Delaunay triangulation can be numerically sensitive in some cases. To prevent problems, try to avoid injecting points that will result in triangles with bad aspect ratios (1000:1 or greater). In practice this means inserting points that are "widely dispersed", and enables smooth transition of triangle sizes throughout the mesh. (You may even want to add extra points to create a better point distribution.) If numerical problems are present, you will see a warning message to this effect at the end of the triangulation process.<br><br><br> | |||

Warning:<br> | |||

Points arranged on a regular lattice (termed degenerate cases) can be triangulated in more than one way (at least according to the Delaunay criterion). The choice of triangulation (as implemented by this algorithm) depends on the order of the input points. The first three points will form a triangle; other degenerate points will not break this triangle.<br><br><br> | |||

Points that are coincident (or nearly so) may be discarded by the algorithm. This is because the Delaunay triangulation requires unique input points. The output of the Delaunay triangulation is supposedly a convex hull. In certain cases this implementation may not generate the convex hull.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 1,365: | Line 1,383: | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| ''' | | '''Alpha'''<br>''(Alpha)'' | ||

| | |||

The value of this property controls the output of this filter. For a non-zero alpha value, only edges or triangles contained within a sphere centered at mesh vertices will be output. Otherwise, only triangles will be output. | |||

| 0 | |||

| | |||

The value must be greater than or equal to 0. | |||

|- | |||

| '''Bounding Triangulation'''<br>''(BoundingTriangulation)'' | |||

| | | | ||

If this property is set to 1, bounding triangulation points (and associated triangles) are included in the output. These are introduced as an initial triangulation to begin the triangulation process. This feature is nice for debugging output. | |||

| 0 | | 0 | ||

| | | | ||

Only the values 0 and 1 are accepted. | |||

Line 1,377: | Line 1,405: | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the input to the | This property specifies the input dataset to the Delaunay 2D filter. | ||

| | | | ||

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The selected dataset must be one of the following types (or a subclass of one of them): | The selected dataset must be one of the following types (or a subclass of one of them): vtkPointSet. | ||

|- | |- | ||

| ''' | | '''Offset'''<br>''(Offset)'' | ||

| | | | ||

This property is a multiplier to control the size of the initial, bounding Delaunay triangulation. | |||

| | | 1 | ||

| | | | ||

The value must be greater than or equal to 0.75. | |||

|- | |- | ||

| ''' | | '''Projection Plane Mode'''<br>''(ProjectionPlaneMode)'' | ||

| | | | ||

This property determines type of projection plane to use in performing the triangulation. | |||

| | | 0 | ||

| | | | ||

The value must be one of the following: XY Plane (0), Best-Fitting Plane (2). | |||

|- | |- | ||

| ''' | | '''Tolerance'''<br>''(Tolerance)'' | ||

| | | | ||

This property specifies a tolerance to control discarding of closely spaced points. This tolerance is specified as a fraction of the diagonal length of the bounding box of the points. | |||

| | | 1e-05 | ||

| | | | ||

The value must be greater than or equal to 0 and less than or equal to | The value must be greater than or equal to 0 and less than or equal to 1. | ||

| | |} | ||

==Delaunay 3D== | |||

Create a 3D Delaunay triangulation of input points. It expects a vtkPointSet as input and produces vtkUnstructuredGrid as output. | |||

Delaunay3D is a filter that constructs a 3D Delaunay triangulation<br> | |||

from a list of input points. These points may be represented by any<br> | |||

dataset of type vtkPointSet and subclasses. The output of the filter<br> | |||

is an unstructured grid dataset. Usually the output is a tetrahedral<br> | |||

mesh, but if a non-zero alpha distance value is specified (called<br> | |||

the "alpha" value), then only tetrahedra, triangles, edges, and<br> | |||

vertices lying within the alpha radius are output. In other words,<br> | |||

non-zero alpha values may result in arbitrary combinations of<br> | |||

tetrahedra, triangles, lines, and vertices. (The notion of alpha<br> | |||

value is derived from Edelsbrunner's work on "alpha shapes".)<br><br><br> | |||

The 3D Delaunay triangulation is defined as the triangulation that<br> | |||

satisfies the Delaunay criterion for n-dimensional simplexes (in<br> | |||

this case n=3 and the simplexes are tetrahedra). This criterion<br> | |||

states that a circumsphere of each simplex in a triangulation<br> | |||

contains only the n+1 defining points of the simplex. (See text for<br> | |||

more information.) While in two dimensions this translates into an<br> | |||

"optimal" triangulation, this is not true in 3D, since a measurement<br> | |||

for optimality in 3D is not agreed on.<br><br><br> | |||

Delaunay triangulations are used to build topological structures<br> | |||

from unorganized (or unstructured) points. The input to this filter<br> | |||

is a list of points specified in 3D. (If you wish to create 2D<br> | |||

triangulations see Delaunay2D.) The output is an unstructured<br> | |||

grid.<br><br><br> | |||

The Delaunay triangulation can be numerically sensitive. To prevent<br> | |||

problems, try to avoid injecting points that will result in<br> | |||

triangles with bad aspect ratios (1000:1 or greater). In practice<br> | |||

this means inserting points that are "widely dispersed", and enables<br> | |||

smooth transition of triangle sizes throughout the mesh. (You may<br> | |||

even want to add extra points to create a better point<br> | |||

The | distribution.) If numerical problems are present, you will see a<br> | ||

Delaunay triangulations are used to build topological structures from unorganized (or unstructured) points. The input to this filter is a list of points specified in 3D | warning message to this effect at the end of the triangulation<br> | ||

The Delaunay triangulation can be numerically sensitive | process.<br><br><br> | ||

Warning:<br> | Warning:<br> | ||

Points arranged on a regular lattice (termed degenerate cases) can be triangulated in more than one way (at least according to the Delaunay criterion). The choice of triangulation (as implemented by this algorithm) depends on the order of the input points. The first | Points arranged on a regular lattice (termed degenerate cases) can<br> | ||

Points that are coincident (or nearly so) may be discarded by the algorithm. This is because the Delaunay triangulation requires unique input points. The output of the Delaunay triangulation is supposedly a convex hull. In certain cases this implementation may not generate the convex hull.<br> | be triangulated in more than one way (at least according to the<br> | ||

Delaunay criterion). The choice of triangulation (as implemented by<br> | |||

this algorithm) depends on the order of the input points. The first<br> | |||

four points will form a tetrahedron; other degenerate points<br> | |||

(relative to this initial tetrahedron) will not break it.<br><br><br> | |||

Points that are coincident (or nearly so) may be discarded by the<br> | |||

algorithm. This is because the Delaunay triangulation requires<br> | |||

unique input points. You can control the definition of coincidence<br> | |||

with the "Tolerance" instance variable.<br><br><br> | |||

The output of the Delaunay triangulation is supposedly a convex<br> | |||

hull. In certain cases this implementation may not generate the<br> | |||

convex hull. This behavior can be controlled by the Offset instance<br> | |||

variable. Offset is a multiplier used to control the size of the<br> | |||

initial triangulation. The larger the offset value, the more likely<br> | |||

you will generate a convex hull; and the more likely you are to see<br> | |||

numerical problems.<br><br><br> | |||

The implementation of this algorithm varies from the 2D Delaunay<br> | |||

algorithm (i.e., Delaunay2D) in an important way. When points are<br> | |||

injected into the triangulation, the search for the enclosing<br> | |||

tetrahedron is quite different. In the 3D case, the closest<br> | |||

previously inserted point point is found, and then the connected<br> | |||

tetrahedra are searched to find the containing one. (In 2D, a "walk"<br> | |||

towards the enclosing triangle is performed.) If the triangulation<br> | |||

is Delaunay, then an enclosing tetrahedron will be found. However,<br> | |||

in degenerate cases an enclosing tetrahedron may not be found and<br> | |||

the point will be rejected.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 1,491: | Line 1,523: | ||

| '''Alpha'''<br>''(Alpha)'' | | '''Alpha'''<br>''(Alpha)'' | ||

| | | | ||

This property specifies the alpha (or distance) value to control | |||

the output of this filter. For a non-zero alpha value, only | |||

edges, faces, or tetra contained within the circumsphere (of | |||

radius alpha) will be output. Otherwise, only tetrahedra will be | |||

output. | |||

| 0 | | 0 | ||

Line 1,501: | Line 1,537: | ||

| '''Bounding Triangulation'''<br>''(BoundingTriangulation)'' | | '''Bounding Triangulation'''<br>''(BoundingTriangulation)'' | ||

| | | | ||

This boolean controls whether bounding triangulation points (and | |||

associated triangles) are included in the output. (These are | |||

introduced as an initial triangulation to begin the triangulation | |||

process. This feature is nice for debugging output.) | |||

| 0 | | 0 | ||

Line 1,511: | Line 1,550: | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the input dataset to the Delaunay | This property specifies the input dataset to the Delaunay 3D filter. | ||

| | | | ||

Line 1,524: | Line 1,563: | ||

| '''Offset'''<br>''(Offset)'' | | '''Offset'''<br>''(Offset)'' | ||

| | | | ||

This property | This property specifies a multiplier to control the size of the | ||

initial, bounding Delaunay triangulation. | |||

| | | 2.5 | ||

| | | | ||

The value must be greater than or equal to | The value must be greater than or equal to 2.5. | ||

|- | |- | ||

| ''' | | '''Tolerance'''<br>''(Tolerance)'' | ||

| | |||

This property specifies a tolerance to control discarding of | |||

closely spaced points. This tolerance is specified as a fraction | |||

of the diagonal length of the bounding box of the points. | |||

| 0.001 | |||

| | |||

The value must be greater than or equal to 0 and less than or equal to 1. | |||

|} | |||

==Descriptive Statistics== | |||

Compute a statistical model of a dataset and/or assess the dataset with a statistical model. | |||

This filter either computes a statistical model of a dataset or takes such a model as its second input. Then, the model (however it is obtained) may optionally be used to assess the input dataset. | |||

<br> | |||

This filter computes the min, max, mean, raw moments M2 through M4, standard deviation, skewness, and kurtosis for each array you select. | |||

<br> | |||

The model is simply a univariate Gaussian distribution with the mean and standard deviation provided. Data is assessed using this model by detrending the data (i.e., subtracting the mean) and then dividing by the standard deviation. Thus the assessment is an array whose entries are the number of standard deviations from the mean that each input point lies.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | |||

|- | |||

| '''Property''' | |||

| '''Description''' | |||

| '''Default Value(s)''' | |||

| '''Restrictions''' | |||

|- | |||

| '''Attribute Mode'''<br>''(AttributeMode)'' | |||

| | | | ||

Specify which type of field data the arrays will be drawn from. | |||

| 0 | | 0 | ||

| | | | ||

Valud array names will be chosen from point and cell data. | |||

|- | |- | ||

| ''' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

The input to the filter. Arrays from this dataset will be used for computing statistics and/or assessed by a statistical model. | |||

| | | | ||

The | | | ||

The selected object must be the result of the following: sources (includes readers), filters. | |||

The dataset must contain a point or cell array. | |||

The selected dataset must be one of the following types (or a subclass of one of them): vtkImageData, vtkStructuredGrid, vtkPolyData, vtkUnstructuredGrid, vtkTable, vtkGraph. | |||

|- | |||

| '''Model Input'''<br>''(ModelInput)'' | |||

| | |||

A previously-calculated model with which to assess a separate dataset. This input is optional. | |||

| | |||

| | |||

The selected object must be the result of the following: sources (includes readers), filters. | |||

The selected dataset must be one of the following types (or a subclass of one of them): vtkTable, vtkMultiBlockDataSet. | |||

|- | |||

| '''Variables of Interest'''<br>''(SelectArrays)'' | |||

| | |||

Choose arrays whose entries will be used to form observations for statistical analysis. | |||

| | |||

| | |||

An array of scalars is required. | |||

|- | |||

| '''Deviations should be'''<br>''(SignedDeviations)'' | |||

| | |||

Should the assessed values be signed deviations or unsigned? | |||

be | |||

|- | |||

| ''' | |||

| | |||

| | |||

|- | |||

| ''' | |||

| | |||

| 0 | | 0 | ||

| | | | ||

The value must be | The value must be one of the following: Unsigned (0), Signed (1). | ||

|- | |- | ||

| ''' | | '''Task'''<br>''(Task)'' | ||

| | | | ||

Specify the task to be performed: modeling and/or assessment. | |||

# "Statistics of all the data," creates an output table (or tables) summarizing the '''entire''' input dataset; | |||

# "Model a subset of the data," creates an output table (or tables) summarizing a '''randomly-chosen subset''' of the input dataset; | |||

# "Assess the data with a model," adds attributes to the first input dataset using a model provided on the second input port; and | |||

# "Model and assess the same data," is really just operations 2 and 3 above applied to the same input dataset. The model is first trained using a fraction of the input data and then the entire dataset is assessed using that model. | |||

When the task includes creating a model (i.e., tasks 2, and 4), you may adjust the fraction of the input dataset used for training. You should avoid using a large fraction of the input data for training as you will then not be able to detect overfitting. The ''Training fraction'' setting will be ignored for tasks 1 and 3. | |||

| 3 | |||

| | |||

| | | | ||

The value must be one of the following: Statistics of all the data (0), Model a subset of the data (1), Assess the data with a model (2), Model and assess the same data (3). | |||

The | |||

|- | |- | ||

| ''' | | '''Training Fraction'''<br>''(TrainingFraction)'' | ||

| | | | ||

Specify the fraction of values from the input dataset to be used for model fitting. The exact set of values is chosen at random from the dataset. | |||

| 0.1 | |||

| 0. | |||

| | | | ||

The value must be greater than or equal to 0 and less than or equal to 1. | The value must be greater than or equal to 0 and less than or equal to 1. | ||

Line 1,692: | Line 1,693: | ||

== | ==Elevation== | ||

Create point attribute array by projecting points onto an elevation vector. | |||

The Elevation filter generates point scalar values for an input dataset along a specified direction vector.<br><br><br> | |||

The Input menu allows the user to select the data set to which this filter will be applied. Use the Scalar range entry boxes to specify the minimum and maximum scalar value to be generated. The Low Point and High Point define a line onto which each point of the data set is projected. The minimum scalar value is associated with the Low Point, and the maximum scalar value is associated with the High Point. The scalar value for each point in the data set is determined by the location along the line to which that point projects.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 1,712: | Line 1,708: | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| ''' | | '''High Point'''<br>''(HighPoint)'' | ||

| | | | ||

This property defines the other end of the direction vector (large scalar values). | |||

| 0 | | 0 0 1 | ||

| | | | ||

The coordinate must lie within the bounding box of the dataset. It will default to the maximum in each dimension. | |||

Line 1,724: | Line 1,720: | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the input dataset to the Elevation filter. | |||

| | | | ||

Line 1,731: | Line 1,727: | ||

The dataset must | The selected dataset must be one of the following types (or a subclass of one of them): vtkDataSet. | ||

|- | |||

| '''Low Point'''<br>''(LowPoint)'' | |||

| | |||

This property defines one end of the direction vector (small scalar values). | |||

The | | 0 0 0 | ||

| | |||

The coordinate must lie within the bounding box of the dataset. It will default to the minimum in each dimension. | |||

|- | |- | ||

| ''' | | '''Scalar Range'''<br>''(ScalarRange)'' | ||

| | | | ||

This property determines the range into which scalars will be mapped. | |||

| 0 1 | |||

| | | | ||

| | |} | ||

==Extract AMR Blocks== | |||

This filter extracts a list of datasets from hierarchical datasets. | |||

This filter extracts a list of datasets from hierarchical datasets.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | |||

|- | |||

| '''Property''' | |||

| '''Description''' | |||

| '''Default Value(s)''' | |||

| '''Restrictions''' | |||

|- | |- | ||

| ''' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the input to the Extract Datasets filter. | |||

| | | | ||

| | | | ||

The selected object must be the result of the following: sources (includes readers), filters. | |||

The selected dataset must be one of the following types (or a subclass of one of them): vtkHierarchicalBoxDataSet. | |||

|- | |- | ||

| ''' | | '''Selected Data Sets'''<br>''(SelectedDataSets)'' | ||

| | | | ||

This property provides a list of datasets to extract. | |||

| | | | ||

| | |||

|} | |||

==Extract Block== | |||

This filter extracts a range of blocks from a multiblock dataset. | |||

This filter extracts a range of groups from a multiblock dataset<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 1,814: | Line 1,800: | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| ''' | | '''Block Indices'''<br>''(BlockIndices)'' | ||

| | | | ||

This property | This property lists the ids of the blocks to extract | ||

from the input multiblock dataset. | |||

| | | | ||

| | |||

|- | |- | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the input | This property specifies the input to the Extract Group filter. | ||

| | | | ||

Line 1,833: | Line 1,817: | ||

The selected dataset must be one of the following types (or a subclass of one of them): | The selected dataset must be one of the following types (or a subclass of one of them): vtkMultiBlockDataSet. | ||

|- | |- | ||

| ''' | | '''Maintain Structure'''<br>''(MaintainStructure)'' | ||

| | | | ||

This | This is used only when PruneOutput is ON. By default, when pruning the | ||

output i.e. remove empty blocks, if node has only 1 non-null child | |||

block, then that node is removed. To preserve these parent nodes, set | |||

this flag to true. | |||

| | | 0 | ||

| | | | ||

Only the values 0 and 1 are accepted. | |||

|- | |- | ||

| ''' | | '''Prune Output'''<br>''(PruneOutput)'' | ||

| | | | ||

When set, the output mutliblock dataset will be pruned to remove empty | |||

nodes. On by default. | |||

| | | 1 | ||

| | | | ||

Only the values 0 and 1 are accepted. | |||

|} | |} | ||

==Extract | ==Extract CTH Parts== | ||

Create a surface from a CTH volume fraction. | |||

Extract CTH Parts is a specialized filter for visualizing the data from a CTH simulation. It first converts the selected cell-centered arrays to point-centered ones. It then contours each array at a value of 0.5. The user has the option of clipping the resulting surface(s) with a plane. This filter only operates on unstructured data. It produces polygonal output.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 1,870: | Line 1,861: | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| ''' | | '''Double Volume Arrays'''<br>''(AddDoubleVolumeArrayName)'' | ||

| | | | ||

This property specifies the | This property specifies the name(s) of the volume fraction array(s) for generating parts. | ||

| | | | ||

| | | | ||

An array of scalars is required. | |||

|- | |||

| '''Float Volume Arrays'''<br>''(AddFloatVolumeArrayName)'' | |||

| | |||

This property specifies the name(s) of the volume fraction array(s) for generating parts. | |||

| | |||

| | |||

An array of scalars is required. | |||

|- | |- | ||

| ''' | | '''Unsigned Character Volume Arrays'''<br>''(AddUnsignedCharVolumeArrayName)'' | ||

| | | | ||

This property | This property specifies the name(s) of the volume fraction array(s) for generating parts. | ||

| | | | ||

| | | | ||

An array of scalars is required. | |||

|- | |||

| '''Clip Type'''<br>''(ClipPlane)'' | |||

| | |||

This property specifies whether to clip the dataset, and if so, it also specifies the parameters of the plane with which to clip. | |||

| | |||

| | |||

The value must be set to one of the following: None, Plane, Box, Sphere. | |||

|- | |- | ||

| ''' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the input to the Extract CTH Parts filter. | |||

This property specifies the input to the Extract | |||

| | | | ||

Line 1,923: | Line 1,910: | ||

The | The dataset must contain a cell array with 1 components. | ||

The selected dataset must be one of the following types (or a subclass of one of them): vtkDataSet. | |||

|- | |- | ||

| ''' | | '''Volume Fraction Value'''<br>''(VolumeFractionSurfaceValue)'' | ||

| | | | ||

The value of this property is the volume fraction value for the surface. | |||

| 1 | | 0.1 | ||

| | | | ||

The value must be greater than or equal to 0 and less than or equal to 1. | |||

Line 1,953: | Line 1,929: | ||

==Extract | ==Extract Cells By Region== | ||

This filter extracts cells that are inside/outside a region or at a region boundary. | |||

This filter extracts from its input dataset all cells that are either completely inside or outside of a specified region (implicit function). On output, the filter generates an unstructured grid.<br> | |||

To use this filter you must specify a region (implicit function). You must also specify whethter to extract cells lying inside or outside of the region. An option exists to extract cells that are neither inside or outside (i.e., boundary).<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 1,967: | Line 1,944: | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| ''' | | '''Extract intersected'''<br>''(Extract intersected)'' | ||

| | | | ||

This | This parameter controls whether to extract cells that are on the boundary of the region. | ||

| 0 | |||

| | | | ||

Only the values 0 and 1 are accepted. | |||

|- | |- | ||

| ''' | | '''Extract only intersected'''<br>''(Extract only intersected)'' | ||

| | | | ||

This | This parameter controls whether to extract only cells that are on the boundary of the region. If this parameter is set, the Extraction Side parameter is ignored. If Extract Intersected is off, this parameter has no effect. | ||

| 0 | |||

| | | | ||

Only the values 0 and 1 are accepted. | |||

|- | |- | ||

| ''' | | '''Extraction Side'''<br>''(ExtractInside)'' | ||

| | | | ||

This | This parameter controls whether to extract cells that are inside or outside the region. | ||

| 1 | |||

| | | | ||

The value must be one of the following: outside (0), inside (1). | |||

|- | |- | ||

| ''' | | '''Intersect With'''<br>''(ImplicitFunction)'' | ||

| | | | ||

This property | This property sets the region used to extract cells. | ||

| | | | ||

| | | | ||

The value must be set to one of the following: | The value must be set to one of the following: Plane, Box, Sphere. | ||

Line 2,009: | Line 1,986: | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the input to the | This property specifies the input to the Slice filter. | ||

| | | | ||

| | | | ||

The selected object must be the result of the following: sources (includes readers), filters. | The selected object must be the result of the following: sources (includes readers), filters. | ||

The selected dataset must be one of the following types (or a subclass of one of them): vtkDataSet. | The selected dataset must be one of the following types (or a subclass of one of them): vtkDataSet. | ||

Line 2,035: | Line 1,999: | ||

==Extract | ==Extract Edges== | ||

Extract edges of 2D and 3D cells as lines. | |||

The Extract Edges filter produces a wireframe version of the input dataset by extracting all the edges of the dataset's cells as lines. This filter operates on any type of data set and produces polygonal output.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 2,050: | Line 2,013: | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| ''' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This | This property specifies the input to the Extract Edges filter. | ||

| | | | ||

| | |||

The selected object must be the result of the following: sources (includes readers), filters. | |||

The selected dataset must be one of the following types (or a subclass of one of them): vtkDataSet. | |||

| | |} | ||

==Extract Level== | |||

This filter extracts a range of groups from a hierarchical dataset. | |||

This filter extracts a range of levels from a hierarchical dataset<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | |||

|- | |- | ||

| ''' | | '''Property''' | ||

| '''Description''' | |||

| '''Default Value(s)''' | |||

| '''Restrictions''' | |||

|- | |||

| '''Input'''<br>''(Input)'' | |||

| | | | ||

This property | This property specifies the input to the Extract Group filter. | ||

| | | | ||

| | | | ||

The | The selected object must be the result of the following: sources (includes readers), filters. | ||

The selected dataset must be one of the following types (or a subclass of one of them): vtkHierarchicalBoxDataSet. | |||

|- | |- | ||

| ''' | | '''Levels'''<br>''(Levels)'' | ||

| | | | ||

This property | This property lists the levels to extract | ||

from the input hierarchical dataset. | |||

| | | | ||

| | | | ||

|} | |} | ||

==Extract | ==Extract Selection== | ||

Extract | Extract different type of selections. | ||

This filter extracts a set of cells/points given a selection.<br> | |||

The selection can be obtained from a rubber-band selection<br> | |||

(either cell, visible or in a frustum) or threshold selection<br> | |||

and passed to the filter or specified by providing an ID list.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 2,121: | Line 2,084: | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the input | This property specifies the input from which the selection is extracted. | ||

| | | | ||

Line 2,128: | Line 2,091: | ||

The selected dataset must be one of the following types (or a subclass of one of them): vtkDataSet. | The selected dataset must be one of the following types (or a subclass of one of them): vtkDataSet, vtkTable. | ||

| | |- | ||

| '''Preserve Topology'''<br>''(PreserveTopology)'' | |||

| | |||

If this property is set to 1 the output preserves the topology of its | |||

input and adds an insidedness array to mark which cells are inside or | |||

out. If 0 then the output is an unstructured grid which contains only | |||

the subset of cells that are inside. | |||

| 0 | |||

| | |||

Only the values 0 and 1 are accepted. | |||

|- | |- | ||

| ''' | | '''Selection'''<br>''(Selection)'' | ||

| | | | ||

The input that provides the selection object. | |||

| | | | ||

Line 2,157: | Line 2,117: | ||

The selected dataset must be one of the following types (or a subclass of one of them): | The selected dataset must be one of the following types (or a subclass of one of them): vtkSelection. | ||

|- | |- | ||

| ''' | | '''Show Bounds'''<br>''(ShowBounds)'' | ||

| | | | ||

For frustum selection, if this property is set to 1 the output is the | |||

outline of the frustum instead of the contents of the input that lie | |||

within the frustum. | |||

| 0 | |||

| | | | ||

Only the values 0 and 1 are accepted. | |||

|} | |} | ||

==Extract | ==Extract Subset== | ||

Extract | Extract a subgrid from a structured grid with the option of setting subsample strides. | ||

The Extract Grid filter returns a subgrid of a structured input data set (uniform rectilinear, curvilinear, or nonuniform rectilinear). The output data set type of this filter is the same as the input type.<br> | |||

( | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 2,188: | Line 2,149: | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| ''' | | '''Include Boundary'''<br>''(IncludeBoundary)'' | ||

| | | | ||

This property specifies the input | If the value of this property is 1, then if the sample rate in any dimension is greater than 1, the boundary indices of the input dataset will be passed to the output even if the boundary extent is not an even multiple of the sample rate in a given dimension. | ||

| 0 | |||

| | |||

Only the values 0 and 1 are accepted. | |||

|- | |||

| '''Input'''<br>''(Input)'' | |||

| | |||

This property specifies the input to the Extract Grid filter. | |||

| | | | ||

Line 2,197: | Line 2,168: | ||

The selected dataset must be one of the following types (or a subclass of one of them): | The selected dataset must be one of the following types (or a subclass of one of them): vtkImageData, vtkRectilinearGrid, vtkStructuredPoints, vtkStructuredGrid. | ||

|- | |- | ||

| ''' | | '''Sample Rate I'''<br>''(SampleRateI)'' | ||

| | | | ||

This property indicates the sampling rate in the I dimension. A value grater than 1 results in subsampling; every nth index will be included in the output. | |||

| | | 1 | ||

| | | | ||

The value must be greater than or equal to 1. | |||

|- | |- | ||

| ''' | | '''Sample Rate J'''<br>''(SampleRateJ)'' | ||

| | | | ||

This property indicates the sampling rate in the J dimension. A value grater than 1 results in subsampling; every nth index will be included in the output. | |||

| 1 | |||

| | | | ||

The value must be greater than or equal to 1. | |||

|- | |||

| '''Sample Rate K'''<br>''(SampleRateK)'' | |||

| | | | ||

This property indicates the sampling rate in the K dimension. A value grater than 1 results in subsampling; every nth index will be included in the output. | |||

| 1 | |||

The | | | ||

The value must be greater than or equal to 1. | |||

|- | |- | ||

| ''' | | '''V OI'''<br>''(VOI)'' | ||

| | | | ||

This property specifies the minimum and maximum point indices along each of the I, J, and K axes; these values indicate the volume of interest (VOI). The output will have the (I,J,K) extent specified here. | |||

| 0 | | 0 0 0 0 0 0 | ||

| | | | ||

The values must lie within the extent of the input dataset. | |||

Line 2,241: | Line 2,214: | ||

==Extract | ==Extract Surface== | ||

Extract a | Extract a 2D boundary surface using neighbor relations to eliminate internal faces. | ||

The Extract | The Extract Surface filter extracts the polygons forming the outer surface of the input dataset. This filter operates on any type of data and produces polygonal data as output.<br> | ||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 2,254: | Line 2,227: | ||

| '''Default Value(s)''' | | '''Default Value(s)''' | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the input to the Extract | This property specifies the input to the Extract Surface filter. | ||

| | | | ||

Line 2,274: | Line 2,237: | ||

The selected dataset must be one of the following types (or a subclass of one of them): | The selected dataset must be one of the following types (or a subclass of one of them): vtkDataSet. | ||

|- | |- | ||

| ''' | | '''Nonlinear Subdivision Level'''<br>''(NonlinearSubdivisionLevel)'' | ||

| | | | ||

If the input is an unstructured grid with nonlinear faces, this | |||

parameter determines how many times the face is subdivided into | |||

linear faces. If 0, the output is the equivalent of its linear | |||

couterpart (and the midpoints determining the nonlinear | |||

interpolation are discarded). If 1, the nonlinear face is | |||

triangulated based on the midpoints. If greater than 1, the | |||

triangulated pieces are recursively subdivided to reach the | |||

desired subdivision. Setting the value to greater than 1 may | |||

cause some point data to not be passed even if no quadratic faces | |||

exist. This option has no effect if the input is not an | |||

unstructured grid. | |||

| 1 | | 1 | ||

| | | | ||

The value must be greater than or equal to | The value must be greater than or equal to 0 and less than or equal to 4. | ||

|- | |- | ||

| ''' | | '''Piece Invariant'''<br>''(PieceInvariant)'' | ||

| | | | ||

If the value of this property is set to 1, internal surfaces along process boundaries will be removed. NOTE: Enabling this option might cause multiple executions of the data source because more information is needed to remove internal surfaces. | |||

| 1 | | 1 | ||

| | | | ||

Only the values 0 and 1 are accepted. | |||

| | |} | ||

==FFT Of Selection Over Time== | |||

Extracts selection over time and plots the FFT | |||

Extracts the data of a selection (e.g. points or cells) over time,<br> | |||

takes the FFT of them, and plots them.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 2,336: | Line 2,290: | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

The input from which the selection is extracted. | |||

| | | | ||

Line 2,343: | Line 2,297: | ||

The selected dataset must be one of the following types (or a subclass of one of them): vtkDataSet. | The selected dataset must be one of the following types (or a subclass of one of them): vtkDataSet, vtkTable, vtkCompositeDataSet. | ||

|- | |- | ||

| ''' | | '''Selection'''<br>''(Selection)'' | ||

| | | | ||

The input that provides the selection object. | |||

| | | | ||

The | | | ||

The selected object must be the result of the following: sources (includes readers), filters. | |||

The selected dataset must be one of the following types (or a subclass of one of them): vtkSelection. | |||

Line 2,379: | Line 2,316: | ||

== | ==FOF/SOD Halo Finder== | ||

Sorry, no help is currently available. | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 2,394: | Line 2,329: | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| ''' | | '''bb (linking length)'''<br>''(BB)'' | ||

| | | | ||

Linking length measured in units of interparticle spacing and is dimensionless. Used to link particles into halos for the friends-of-friends (FOF) algorithm. | |||

| 0.2 | |||

| | | | ||

The value must be greater than or equal to 0. | |||

The | |||

|- | |- | ||

| ''' | | '''Compute the most bound particle'''<br>''(ComputeMostBoundParticle)'' | ||

| | | | ||

If checked, the most bound particle for an FOF halo will be calculated. WARNING: This can be very slow. | |||

| 0 | |||

| | | | ||

Only the values 0 and 1 are accepted. | |||

|- | |- | ||

| ''' | | '''Compute the most connected particle'''<br>''(ComputeMostConnectedParticle)'' | ||

| | | | ||

If the | If checked, the most connected particle for an FOF halo will be calculated. WARNING: This can be very slow. | ||

| | | 0 | ||

| | | | ||

Only the values 0 and 1 are accepted. | Only the values 0 and 1 are accepted. | ||

Line 2,446: | Line 2,359: | ||

|- | |- | ||

| ''' | | '''Compute spherical overdensity (SOD) halos'''<br>''(ComputeSOD)'' | ||

| | | | ||

If | If checked, spherical overdensity (SOD) halos will be calculated in addition to friends-of-friends (FOF) halos. | ||

| 0 | | 0 | ||

Line 2,456: | Line 2,369: | ||

|- | |- | ||

| ''' | | '''Copy FOF halo catalog to original particles'''<br>''(CopyHaloDataToParticles)'' | ||

| | | | ||

If checked, the friends-of-friends (FOF) halo catalog information will be copied to the original particles as well. | |||

| | | 0 | ||

| | | | ||

Only the values 0 and 1 are accepted. | Only the values 0 and 1 are accepted. | ||

Line 2,479: | Line 2,381: | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

| | | | ||

| | | | ||

Line 2,486: | Line 2,386: | ||

The selected dataset must be one of the following types (or a subclass of one of them): | The selected dataset must be one of the following types (or a subclass of one of them): vtkUnstructuredGrid. | ||

|- | |- | ||

| ''' | | '''np (number of seeded particles in one dimension, i.e., total particles = np^3)'''<br>''(NP)'' | ||

| | | | ||

Number of seeded particles in one dimension. Therefore, total simulation particles is np^3 (cubed). | |||

| | | 256 | ||

| | | | ||

The value must be greater than or equal to 0. | |||

|- | |- | ||

| ''' | | '''overlap (shared point/ghost cell gap distance)'''<br>''(Overlap)'' | ||

| | | | ||

The space (in rL units) to extend processor particle ownership for ghost particles/cells. Needed for correct halo calculation when halos cross processor boundaries in parallel computation. | |||

| | | 5 | ||

| | | | ||

The value must be greater than or equal to 0. | |||

| | |- | ||

| '''pmin (minimum particle threshold for an FOF halo)'''<br>''(PMin)'' | |||

| | |||

Minimum number of particles (threshold) needed before a group is called a friends-of-friends (FOF) halo. | |||

| 100 | |||

| | |||

The value must be greater than or equal to 1. | |||

|- | |||

| '''rL (physical box side length)'''<br>''(RL)'' | |||

| | |||

The box side length used to wrap particles around if they exceed rL (or less than 0) in any dimension (only positive positions are allowed in the input, or they are wrapped around). | |||

| 100 | |||

| | |||

The value must be greater than or equal to 0. | |||

|- | |- | ||

| ''' | | '''scale factor for rho_c'''<br>''(RhoCScale)'' | ||

| | | | ||

Scale factor for rho_c in SOD halo finding such that rho_c' = rho_c * scale factor. Initial rho_c is 2.77536627e11 (M_sun/h) / (Mpc/h)^3. | |||

| | | 1 | ||

| | | | ||

|- | |- | ||

| ''' | | '''initial SOD center'''<br>''(SODCenterType)'' | ||

| | | | ||

The initial friends-of-friends (FOF) center used for calculating a spherical overdensity (SOD) halo. WARNING: Using MBP or MCP can be very slow. | |||

| 0 | |||

| | | | ||

The value must be one of the following: Center of mass (0), Average position (1), Most bound particle (2), Most connected particle (3). | |||

The | |||

|- | |||

| '''scale factor for initial SOD mass'''<br>''(SODMassScale)'' | |||

| | |||

Scale factor for the initial SOD mass such that mass' = mass * scale factor. Initial SOD mass is 1.0e14 (M_sun/h). | |||

| 1 | |||

| | |||

|} | |} | ||

== | ==Feature Edges== | ||

This filter will extract edges along sharp edges of surfaces or boundaries of surfaces. | |||

The Feature Edges filter extracts various subsets of edges from the input data set. This filter operates on polygonal data and produces polygonal output.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 2,562: | Line 2,470: | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| ''' | | '''Boundary Edges'''<br>''(BoundaryEdges)'' | ||

| | | | ||

If the value of this property is set to 1, boundary edges will be extracted. Boundary edges are defined as lines cells or edges that are used by only one polygon. | |||

| 1 | |||

| | | | ||

Only the values 0 and 1 are accepted. | |||

|- | |||

| '''Coloring'''<br>''(Coloring)'' | |||

| | |||

If the value of this property is set to 1, then the extracted edges are assigned a scalar value based on the type of the edge. | |||

| 0 | |||

| | |||

Only the values 0 and 1 are accepted. | |||

|- | |- | ||

| ''' | | '''Feature Angle'''<br>''(FeatureAngle)'' | ||

| | | | ||

Ths value of this property is used to define a feature edge. If the surface normal between two adjacent triangles is at least as large as this Feature Angle, a feature edge exists. (See the FeatureEdges property.) | |||

| 30 | |||

| | | | ||

The value must be greater than or equal to 0 and less than or equal to 180. | |||

| | |- | ||

| '''Feature Edges'''<br>''(FeatureEdges)'' | |||

| | |||

If the value of this property is set to 1, feature edges will be extracted. Feature edges are defined as edges that are used by two polygons whose dihedral angle is greater than the feature angle. (See the FeatureAngle property.) | |||

Toggle whether to extract feature edges. | |||

| 1 | |||

| | |||

Only the values 0 and 1 are accepted. | |||

|- | |- | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the input to the Feature Edges filter. | |||

| | | | ||

| | | | ||

Line 2,609: | Line 2,520: | ||

The selected dataset must be one of the following types (or a subclass of one of them): | The selected dataset must be one of the following types (or a subclass of one of them): vtkPolyData. | ||

| | |- | ||

| '''Manifold Edges'''<br>''(ManifoldEdges)'' | |||

| | |||

If the value of this property is set to 1, manifold edges will be extracted. Manifold edges are defined as edges that are used by exactly two polygons. | |||

| 0 | |||

| | |||

Only the values 0 and 1 are accepted. | |||

|- | |||

| '''Non-Manifold Edges'''<br>''(NonManifoldEdges)'' | |||

|- | |||

| ''' | |||

| | | | ||

If the value of this property is set to 1, non-manifold ediges will be extracted. Non-manifold edges are defined as edges that are use by three or more polygons. | |||

| | | 1 | ||

| | | | ||

Only the values 0 and 1 are accepted. | Only the values 0 and 1 are accepted. | ||

| | |} | ||

==Generate Ids== | |||

Generate scalars from point and cell ids. | |||

This filter generates scalars using cell and point ids. That is, the point attribute data scalars are generated from the point ids, and the cell attribute data scalars or field data are generated from the the cell ids.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | |||

|- | |- | ||

| ''' | | '''Property''' | ||

| '''Description''' | |||

| '''Default Value(s)''' | |||

| '''Restrictions''' | |||

|- | |||

| '''Array Name'''<br>''(ArrayName)'' | |||

| | | | ||

The name of the array that will contain ids. | |||

| | | Ids | ||

| | | | ||

|- | |- | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the input to the | This property specifies the input to the Cell Data to Point Data filter. | ||

| | | | ||

Line 2,678: | Line 2,576: | ||

The selected dataset must be one of the following types (or a subclass of one of them): | The selected dataset must be one of the following types (or a subclass of one of them): vtkDataSet. | ||

|} | |||

==Generate Quadrature Points== | |||

Create a point set with data at quadrature points. | |||

"Create a point set with data at quadrature points."<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | |||

|- | |- | ||

| ''' | | '''Property''' | ||

| '''Description''' | |||

| '''Default Value(s)''' | |||

| '''Restrictions''' | |||

|- | |||

| '''Input'''<br>''(Input)'' | |||

| | |||

| | |||

| | | | ||

The selected object must be the result of the following: sources (includes readers), filters. | |||

The dataset must contain a cell array. | |||

The selected dataset must be one of the following types (or a subclass of one of them): vtkUnstructuredGrid. | |||

|- | |- | ||

| ''' | | '''Select Source Array'''<br>''(SelectSourceArray)'' | ||

| | | | ||

Specifies the offset array from which we generate quadrature points. | |||

| | | | ||

| | |||

An array of scalars is required. | |||

Line 2,714: | Line 2,622: | ||

== | ==Generate Quadrature Scheme Dictionary== | ||

Generate quadrature scheme dictionaries in data sets that do not have them. | |||

Generate quadrature scheme dictionaries in data sets that do not have them.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 2,728: | Line 2,636: | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| ''' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

| | | | ||

| | | | ||

The | The selected object must be the result of the following: sources (includes readers), filters. | ||

The selected dataset must be one of the following types (or a subclass of one of them): vtkUnstructuredGrid. | |||

|} | |||

==Generate Surface Normals== | |||

This filter will produce surface normals used for smooth shading. Splitting is used to avoid smoothing across feature edges. | |||

This filter generates surface normals at the points of the input polygonal dataset to provide smooth shading of the dataset. The resulting dataset is also polygonal. The filter works by calculating a normal vector for each polygon in the dataset and then averaging the normals at the shared points.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | |||

|- | |- | ||

| ''' | | '''Property''' | ||

| '''Description''' | |||

| '''Default Value(s)''' | |||

| '''Restrictions''' | |||

|- | |||

| '''Compute Cell Normals'''<br>''(ComputeCellNormals)'' | |||

| | | | ||

If the value of this property | This filter computes the normals at the points in the data set. In the process of doing this it computes polygon normals too. If you want these normals to be passed to the output of this filter, set the value of this property to 1. | ||

| | | 0 | ||

| | | | ||

Only the values 0 and 1 are accepted. | Only the values 0 and 1 are accepted. | ||

Line 2,772: | Line 2,673: | ||

|- | |- | ||

| ''' | | '''Consistency'''<br>''(Consistency)'' | ||

| | | | ||

The value of this property controls whether consistent polygon ordering is enforced. Generally the normals for a data set should either all point inward or all point outward. If the value of this property is 1, then this filter will reorder the points of cells that whose normal vectors are oriented the opposite direction from the rest of those in the data set. | |||

| 1 | |||

| | | | ||

Only the values 0 and 1 are accepted. | |||

|- | |- | ||

| ''' | | '''Feature Angle'''<br>''(FeatureAngle)'' | ||

| | | | ||

The value of this property defines a feature edge. If the surface normal between two adjacent triangles is at least as large as this Feature Angle, a feature edge exists. If Splitting is on, points are duplicated along these feature edges. (See the Splitting property.) | |||

| | | 30 | ||

| | | | ||

The value must be greater than or equal to 0 and less than or equal to 180. | |||

|- | |- | ||

| ''' | | '''Flip Normals'''<br>''(FlipNormals)'' | ||

| | | | ||

If this property is set to | If the value of this property is 1, this filter will reverse the normal direction (and reorder the points accordingly) for all polygons in the data set; this changes front-facing polygons to back-facing ones, and vice versa. You might want to do this if your viewing position will be inside the data set instead of outside of it. | ||

| | | 0 | ||

| | | | ||

Only the values 0 and 1 are accepted. | Only the values 0 and 1 are accepted. | ||

Line 2,802: | Line 2,703: | ||

|- | |- | ||

| ''' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the input to the Normals Generation filter. | |||

| | | | ||

The | | | ||

The selected object must be the result of the following: sources (includes readers), filters. | |||

The | The selected dataset must be one of the following types (or a subclass of one of them): vtkPolyData. | ||

|- | |- | ||

| ''' | | '''Non-Manifold Traversal'''<br>''(NonManifoldTraversal)'' | ||

| | | | ||

Turn on/off traversal across non-manifold edges. Not traversing non-manifold edges will prevent problems where the consistency of polygonal ordering is corrupted due to topological loops. | |||

| 1 | | 1 | ||

| | | | ||

Only the values 0 and 1 are accepted. | |||

|- | |- | ||

| ''' | | '''Piece Invariant'''<br>''(PieceInvariant)'' | ||

| | | | ||

Turn this option to to produce the same results regardless of the number of processors used (i.e., avoid seams along processor boundaries). Turn this off if you do want to process ghost levels and do not mind seams. | |||

| 1 | |||

| | | | ||

Only the values 0 and 1 are accepted. | |||

|- | |- | ||

| ''' | | '''Splitting'''<br>''(Splitting)'' | ||

| | | | ||

This property controls the splitting of sharp edges. If sharp edges are split (property value = 1), then points are duplicated along these edges, and separate normals are computed for both sets of points to give crisp (rendered) surface definition. | |||

| 1 | | 1 | ||

Line 2,856: | Line 2,748: | ||

==Glyph | ==Glyph== | ||

This filter generates | This filter generates an arrow, cone, cube, cylinder, line, sphere, or 2D glyph at each point of the input data set. The glyphs can be oriented and scaled by point attributes of the input dataset. | ||

The Glyph filter generates a glyph at each point in the input dataset. The glyphs can be oriented and scaled by the input point-centered scalars and vectors. The Glyph filter operates on any type of data set. Its output is polygonal. This filter is available on the Toolbar.<br> | The Glyph filter generates a glyph (i.e., an arrow, cone, cube, cylinder, line, sphere, or 2D glyph) at each point in the input dataset. The glyphs can be oriented and scaled by the input point-centered scalars and vectors. The Glyph filter operates on any type of data set. Its output is polygonal. This filter is available on the Toolbar.<br> | ||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 2,869: | Line 2,761: | ||

| '''Default Value(s)''' | | '''Default Value(s)''' | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |||

| '''Glyph Transform'''<br>''(GlyphTransform)'' | |||

| | |||

The values in this property allow you to specify the transform | |||

(translation, rotation, and scaling) to apply to the glyph source. | |||

| | |||

| | |||

The value must be set to one of the following: Transform2. | |||

|- | |- | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

Line 2,969: | Line 2,872: | ||

The selected dataset must be one of the following types (or a subclass of one of them): vtkPolyData. | The selected dataset must be one of the following types (or a subclass of one of them): vtkPolyData. | ||

The value must be set to one of the following: ArrowSource, ConeSource, CubeSource, CylinderSource, LineSource, SphereSource, GlyphSource2D. | |||

Line 2,984: | Line 2,890: | ||

== | ==Glyph With Custom Source== | ||

This filter | This filter generates a glyph at each point of the input data set. The glyphs can be oriented and scaled by point attributes of the input dataset. | ||

The | The Glyph filter generates a glyph at each point in the input dataset. The glyphs can be oriented and scaled by the input point-centered scalars and vectors. The Glyph filter operates on any type of data set. Its output is polygonal. This filter is available on the Toolbar.<br> | ||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 2,998: | Line 2,904: | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| ''' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property | This property specifies the input to the Glyph filter. This is the dataset to which the glyphs will be applied. | ||

| | | | ||

The | | | ||

The selected object must be the result of the following: sources (includes readers), filters. | |||

The selected dataset must be one of the following types (or a subclass of one of them): vtkDataSet. | |||

|- | |- | ||

| ''' | | '''Maximum Number of Points'''<br>''(MaximumNumberOfPoints)'' | ||

| | | | ||

The value of this property specifies the maximum number of glyphs that should appear in the output dataset if the value of the UseMaskPoints property is 1. (See the UseMaskPoints property.) | |||

| 5000 | |||

| | | | ||

The value must be greater than or equal to 0. | |||

The | |||

|- | |||

| '''Random Mode'''<br>''(RandomMode)'' | |||

| | |||

If the value of this property is 1, then the points to glyph are chosen randomly. Otherwise the point ids chosen are evenly spaced. | |||

| 1 | |||

| | |||

Only the values 0 and 1 are accepted. | |||

|- | |- | ||

| ''' | | '''Scalars'''<br>''(SelectInputScalars)'' | ||

| | | | ||

This property | This property indicates the name of the scalar array on which to operate. The indicated array may be used for scaling the glyphs. (See the SetScaleMode property.) | ||

| | | | ||

Line 3,033: | Line 2,946: | ||

| | |- | ||

| '''Vectors'''<br>''(SelectInputVectors)'' | |||

| | |||

This property indicates the name of the vector array on which to operate. The indicated array may be used for scaling and/or orienting the glyphs. (See the SetScaleMode and SetOrient properties.) | |||

| 1 | |||

| | |||

An array of vectors is required. | |||

|- | |||

| '''Orient'''<br>''(SetOrient)'' | |||

| | |||

If this property is set to 1, the glyphs will be oriented based on the selected vector array. | |||

| 1 | |||

| | |||

Only the values 0 and 1 are accepted. | |||

|- | |- | ||

| ''' | | '''Set Scale Factor'''<br>''(SetScaleFactor)'' | ||

| | | | ||

The value of this property will be used as a multiplier for scaling the glyphs before adding them to the output. | |||

| | | 1 | ||

| | | | ||

The value must be less than the largest dimension of the dataset multiplied by a scale factor of 0.1. | |||

The value must lie within the range of the selected data array. | |||

The value must lie within the range of the selected data array. | |||

|- | |- | ||

| ''' | | '''Scale Mode'''<br>''(SetScaleMode)'' | ||

| | | | ||

The value of this property specifies how/if the glyphs should be scaled based on the point-centered scalars/vectors in the input dataset. | |||

| | | 1 | ||

| | | | ||

The value must be one of the following: scalar (0), vector (1), vector_components (2), off (3). | |||

|- | |- | ||

| ''' | | '''Glyph Type'''<br>''(Source)'' | ||

| | | | ||

This property | This property determines which type of glyph will be placed at the points in the input dataset. | ||

| | | | ||

| | | | ||

The selected object must be the result of the following: sources (includes readers), | The selected object must be the result of the following: sources (includes readers), glyph_sources. | ||

The selected dataset must be one of the following types (or a subclass of one of them): vtkPolyData. | |||

The selected dataset must be one of the following types (or a subclass of one of them): | |||

|- | |- | ||

| ''' | | '''Mask Points'''<br>''(UseMaskPoints)'' | ||

| | | | ||

If the value of this property is set to 1, limit the maximum number of glyphs to the value indicated by MaximumNumberOfPoints. (See the MaximumNumberOfPoints property.) | |||

| | | 1 | ||

| | | | ||

Only the values 0 and 1 are accepted. | |||

|} | |} | ||

== | ==Gradient== | ||

This filter computes gradient vectors for an image/volume. | |||

This filter | The Gradient filter computes the gradient vector at each point in an image or volume. This filter uses central differences to compute the gradients. The Gradient filter operates on uniform rectilinear (image) data and produces image data output.<br> | ||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 3,130: | Line 3,031: | ||

| '''Default Value(s)''' | | '''Default Value(s)''' | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |||

| '''Dimensionality'''<br>''(Dimensionality)'' | |||

| | |||

This property indicates whether to compute the gradient in two dimensions or in three. If the gradient is being computed in two dimensions, the X and Y dimensions are used. | |||

| 3 | |||

| | |||

The value must be one of the following: Two (2), Three (3). | |||

|- | |- | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the input to the Gradient filter. | |||

| | | | ||

| | | | ||

Line 3,138: | Line 3,051: | ||

The selected dataset must be one of the following types (or a subclass of one of them): | The dataset must contain a point array with 1 components. | ||

The selected dataset must be one of the following types (or a subclass of one of them): vtkImageData. | |||

|- | |||

| '''Select Input Scalars'''<br>''(SelectInputScalars)'' | |||

| | |||

This property lists the name of the array from which to compute the gradient. | |||

| | |||

| | |||

An array of scalars is required. | |||

Line 3,144: | Line 3,070: | ||

== | ==Gradient Of Unstructured DataSet== | ||

Estimate the gradient for each point or cell in any type of dataset. | |||

The Gradient (Unstructured) filter estimates the gradient vector at each point or cell. It operates on any type of vtkDataSet, and the output is the same type as the input. If the dataset is a vtkImageData, use the Gradient filter instead; it will be more efficient for this type of dataset.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 3,158: | Line 3,084: | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| ''' | | '''Compute Vorticity'''<br>''(ComputeVorticity)'' | ||

| | | | ||

When this flag is on, the gradient filter will compute the | |||

vorticity/curl of a 3 component array. | |||

| 0 | |||

| | | | ||

Only the values 0 and 1 are accepted. | |||

|- | |||

| '''Faster Approximation'''<br>''(FasterApproximation)'' | |||

| | | | ||

The | When this flag is on, the gradient filter will provide a less | ||

accurate (but close) algorithm that performs fewer derivative | |||

calculations (and is therefore faster). The error contains some | |||

smoothing of the output data and some possible errors on the | |||

boundary. This parameter has no effect when performing the | |||

gradient of cell data. | |||

| 0 | |||

| | |||

Only the values 0 and 1 are accepted. | |||

|- | |||

| '''Input'''<br>''(Input)'' | |||

| | |||

This property specifies the input to the Gradient (Unstructured) filter. | |||

| | | | ||

| | |||

The selected object must be the result of the following: sources (includes readers), filters. | |||

The dataset must contain a point or cell array. | |||

The selected dataset must be one of the following types (or a subclass of one of them): vtkPointSet. | |||

|- | |- | ||

| ''' | | '''Result Array Name'''<br>''(ResultArrayName)'' | ||

| | | | ||

This property provides a name for the output array containing the gradient vectors. | |||

| | | Gradients | ||

| | | | ||

|- | |- | ||

| ''' | | '''Scalar Array'''<br>''(SelectInputScalars)'' | ||

| | | | ||

This | This property lists the name of the scalar array from which to compute the gradient. | ||

of | |||

| | | | ||

| | |||

An array of scalars is required. | |||

| | Valud array names will be chosen from point and cell data. | ||

|} | |||

==Grid Connectivity== | |||

Mass properties of connected fragments for unstructured grids. | |||

This filter works on multiblock unstructured grid inputs and also works in<br> | |||

parallel. It Ignores any cells with a cell data Status value of 0.<br> | |||

It performs connectivity to distict fragments separately. It then integrates<br> | |||

attributes of the fragments.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | |||

|- | |||

| '''Property''' | |||

| '''Description''' | |||

| '''Default Value(s)''' | |||

| '''Restrictions''' | |||

|- | |- | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

| | | | ||

| | | | ||

Line 3,235: | Line 3,172: | ||

The dataset must | The selected dataset must be one of the following types (or a subclass of one of them): vtkUnstructuredGrid, vtkCompositeDataSet. | ||

|} | |||

==Group Datasets== | |||

Group data sets. | |||

Groups multiple datasets to create a multiblock dataset<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | |||

|- | |- | ||

| ''' | | '''Property''' | ||

| '''Description''' | |||

| '''Default Value(s)''' | |||

| '''Restrictions''' | |||

|- | |||

| '''Input'''<br>''(Input)'' | |||

| | | | ||

This property indicates the | This property indicates the the inputs to the Group Datasets filter. | ||

| | | | ||

| | | | ||

The selected object must be the result of the following: sources (includes readers), filters. | |||

The selected dataset must be one of the following types (or a subclass of one of them): vtkDataObject. | |||

Line 3,268: | Line 3,207: | ||

== | ==Histogram== | ||

Extract a histogram from field data. | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 3,282: | Line 3,220: | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| ''' | | '''Bin Count'''<br>''(BinCount)'' | ||

| | | | ||

The value of this property specifies the number of bins for the histogram. | |||

| 10 | |||

| | | | ||

The value must be greater than or equal to 1 and less than or equal to 256. | |||

The | |||

|- | |||

| '''Calculate Averages'''<br>''(CalculateAverages)'' | |||

| | |||

This option controls whether the algorithm calculates averages | |||

of variables other than the primary variable that fall into each | |||

bin. | |||

| 1 | |||

| | |||

Only the values 0 and 1 are accepted. | |||

|- | |||

| '''Component'''<br>''(Component)'' | |||

| | |||

The value of this property specifies the array component from which the histogram should be computed. | |||

| 0 | |||

| | |||

|- | |||

| '''Custom Bin Ranges'''<br>''(CustomBinRanges)'' | |||

| | |||

Set custom bin ranges to use. These are used only when | |||

UseCustomBinRanges is set to true. | |||

| 0 100 | |||

| | |||

The value must lie within the range of the selected data array. | |||

|- | |- | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the input to the Histogram filter. | |||

| | | | ||

| | | | ||

Line 3,318: | Line 3,269: | ||

The selected dataset must be one of the following types (or a subclass of one of them): | The dataset must contain a point or cell array. | ||

The selected dataset must be one of the following types (or a subclass of one of them): vtkDataSet. | |||

|- | |- | ||

| '''Select | | '''Select Input Array'''<br>''(SelectInputArray)'' | ||

| | | | ||

This property indicates the name of the array from which to compute the histogram. | |||

| | | | ||

| | | | ||

An array of scalars is required. | An array of scalars is required. | ||

Valud array names will be chosen from point and cell data. | |||

|- | |||

| '''Use Custom Bin Ranges'''<br>''(UseCustomBinRanges)'' | |||

| | |||

When set to true, CustomBinRanges will be used instead of using the | |||

full range for the selected array. By default, set to false. | |||

| 0 | |||

| | |||

Only the values 0 and 1 are accepted. | |||

Line 3,334: | Line 3,302: | ||

== | ==Integrate Variables== | ||

This filter integrates cell and point attributes. | |||

The | The Integrate Attributes filter integrates point and cell data over lines and surfaces. It also computes length of lines, area of surface, or volume.<br> | ||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 3,352: | Line 3,315: | ||

| '''Default Value(s)''' | | '''Default Value(s)''' | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This input | This property specifies the input to the Integrate Attributes filter. | ||

| | | | ||

Line 3,373: | Line 3,325: | ||

The selected dataset must be one of the following types (or a subclass of one of them): | The selected dataset must be one of the following types (or a subclass of one of them): vtkDataSet. | ||

Line 3,392: | Line 3,331: | ||

== | ==Interpolate to Quadrature Points== | ||

Create scalar/vector data arrays interpolated to quadrature points. | |||

"Create scalar/vector data arrays interpolated to quadrature points."<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 3,408: | Line 3,347: | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

| | | | ||

| | | | ||

Line 3,415: | Line 3,352: | ||

The selected dataset must be one of the following types (or a subclass of one of them): | |||

|- | |- | ||

| ''' | | '''Select Source Array'''<br>''(SelectSourceArray)'' | ||

| | | | ||

Specifies the offset array from which we interpolate values to quadrature points. | |||

| | | | ||

| | | | ||

An array of scalars is required. | An array of scalars is required. | ||

Line 3,447: | Line 3,368: | ||

== | ==Intersect Fragments== | ||

The Intersect Fragments filter perform geometric intersections on sets of fragments. | |||

The Intersect Fragments filter perform geometric intersections on sets of<br> | |||

fragments. The filter takes two inputs, the first containing fragment<br> | |||

geometry and the second containing fragment centers. The filter has two<br> | |||

outputs. The first is geometry that results from the intersection. The<br> | |||

second is a set of points that is an approximation of the center of where<br> | |||

each fragment has been intersected.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 3,464: | Line 3,387: | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| ''' | | '''Slice Type'''<br>''(CutFunction)'' | ||

| | | | ||

This property sets the type of intersecting geometry, and | |||

associated parameters. | |||

| | | | ||

| | |||

The value must be set to one of the following: Plane, Box, Sphere. | |||

Line 3,476: | Line 3,400: | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This input must contian fragment geometry. | |||

| | | | ||

Line 3,483: | Line 3,407: | ||

The selected dataset must be one of the following types (or a subclass of one of them): vtkMultiBlockDataSet. | |||

The selected dataset must be one of the following types (or a subclass of one of them): | |||

|- | |- | ||

| ''' | | '''Source'''<br>''(Source)'' | ||

| | | | ||

This input must contian fragment centers. | |||

| | | | ||

The | | | ||

The selected object must be the result of the following: sources (includes readers), filters. | |||

|} | |||

==Iso Volume== | |||

This filter extracts cells by clipping cells that have point scalars not in the specified range. | |||

This filter clip away the cells using lower and upper thresholds.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | |||

|- | |- | ||

| ''' | | '''Property''' | ||

| '''Description''' | |||

| '''Default Value(s)''' | |||

| '''Restrictions''' | |||

|- | |||

| '''Input'''<br>''(Input)'' | |||

| | | | ||

This property specifies the input to the Threshold filter. | |||

| | | | ||

Line 3,519: | Line 3,449: | ||

The | The dataset must contain a point or cell array with 1 components. | ||

The selected dataset must be one of the following types (or a subclass of one of them): vtkDataSet. | |||

|- | |- | ||

| ''' | | '''Input Scalars'''<br>''(SelectInputScalars)'' | ||

| | | | ||

The value of this property contains the name of the scalar array from which to perform thresholding. | |||

| | | | ||

| | |||

An array of scalars is required. | |||

Valud array names will be chosen from point and cell data. | |||

|- | |- | ||

| ''' | | '''Threshold Range'''<br>''(ThresholdBetween)'' | ||

| | | | ||

The values of this property specify the upper and lower bounds of the thresholding operation. | |||

| 0 | | 0 0 | ||

| | | | ||

The value must | The value must lie within the range of the selected data array. | ||

Line 3,571: | Line 3,481: | ||

== | ==K Means== | ||

Compute a statistical model of a dataset and/or assess the dataset with a statistical model. | |||

The | This filter either computes a statistical model of a dataset or takes such a model as its second input. Then, the model (however it is obtained) may optionally be used to assess the input dataset. | ||

<br> | |||

This filter iteratively computes the center of k clusters in a space whose coordinates are specified by the arrays you select. The clusters are chosen as local minima of the sum of square Euclidean distances from each point to its nearest cluster center. The model is then a set of cluster centers. Data is assessed by assigning a cluster center and distance to the cluster to each point in the input data set.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 3,585: | Line 3,498: | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| ''' | | '''Attribute Mode'''<br>''(AttributeMode)'' | ||

| | | | ||

Specify which type of field data the arrays will be drawn from. | |||

| 0 | |||

| | | | ||

Valud array names will be chosen from point and cell data. | |||

The selected | |- | ||

| '''Input'''<br>''(Input)'' | |||

| | |||

| | |||

| | |||

The selected object must be the result of the following: sources (includes readers), filters. | |||

The dataset must contain a point or cell array. | |||

The selected dataset must be one of the following types (or a subclass of one of them): vtkImageData, vtkStructuredGrid, vtkPolyData, vtkUnstructuredGrid, vtkTable, vtkGraph. | |||

|- | |||

| '''k'''<br>''(K)'' | |||

| | |||

Specify the number of clusters. | |||

| 5 | |||

| | |||

The value must be greater than or equal to 1. | |||

|- | |- | ||

| ''' | | '''Max Iterations'''<br>''(MaxNumIterations)'' | ||

| | | | ||

Specify the maximum number of iterations in which cluster centers are moved before the algorithm terminates. | |||

| | | 50 | ||

| | | | ||

The value must be greater than or equal to 1. | |||

|- | |- | ||

| '''Input'''<br>''( | | '''Model Input'''<br>''(ModelInput)'' | ||

| | | | ||

This | A previously-calculated model with which to assess a separate dataset. This input is optional. | ||

| | | | ||

Line 3,633: | Line 3,553: | ||

The selected dataset must be one of the following types (or a subclass of one of them): | The selected dataset must be one of the following types (or a subclass of one of them): vtkTable, vtkMultiBlockDataSet. | ||

|- | |- | ||

| ''' | | '''Variables of Interest'''<br>''(SelectArrays)'' | ||

| | | | ||

Choose arrays whose entries will be used to form observations for statistical analysis. | |||

| | | | ||

| | |||

An array of scalars is required. | |||

|- | |- | ||

| ''' | | '''Task'''<br>''(Task)'' | ||

| | | | ||

The | Specify the task to be performed: modeling and/or assessment. | ||

# "Statistics of all the data," creates an output table (or tables) summarizing the '''entire''' input dataset; | |||

| 3 | |||

| | |||

The value must be one of the following: Statistics of all the data (0), Model a subset of the data (1), Assess the data with a model (2), Model and assess the same data (3). | |||

| | |- | ||

| '''Tolerance'''<br>''(Tolerance)'' | |||

| | |||

Specify the relative tolerance that will cause early termination. | |||

| 0.01 | |||

| | | | ||

The value must be greater than or equal to 0 and less than or equal to 1. | |||

|- | |- | ||

| ''' | | '''Training Fraction'''<br>''(TrainingFraction)'' | ||

| | | | ||

Specify the fraction of values from the input dataset to be used for model fitting. The exact set of values is chosen at random from the dataset. | |||

| 0 | | 0.1 | ||

| | | | ||

The value must be greater than or equal to 0 and less than or equal to 1. | |||

|} | |} | ||

== | ==Level Scalars== | ||

The Level Scalars filter uses colors to show levels of a hierarchical dataset. | |||

The | The Level Scalars filter uses colors to show levels of a hierarchical dataset.<br> | ||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 3,679: | Line 3,621: | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the input to the | This property specifies the input to the Level Scalars filter. | ||

| | | | ||

Line 3,686: | Line 3,628: | ||

The selected dataset must be one of the following types (or a subclass of one of them): | The selected dataset must be one of the following types (or a subclass of one of them): vtkHierarchicalBoxDataSet. | ||

Line 3,702: | Line 3,634: | ||

== | ==Linear Extrusion== | ||

This filter creates a swept surface defined by translating the input along a vector. | |||

The | The Linear Extrusion filter creates a swept surface by translating the input dataset along a specified vector. This filter is intended to operate on 2D polygonal data. This filter operates on polygonal data and produces polygonal data output.<br> | ||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 3,716: | Line 3,648: | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| ''' | | '''Capping'''<br>''(Capping)'' | ||

| | | | ||

The value of this property indicates whether to cap the ends of the swept surface. Capping works by placing a copy of the input dataset on either end of the swept surface, so it behaves properly if the input is a 2D surface composed of filled polygons. If the input dataset is a closed solid (e.g., a sphere), then if capping is on (i.e., this property is set to 1), two copies of the data set will be displayed on output (the second translated from the first one along the specified vector). If instead capping is off (i.e., this property is set to 0), then an input closed solid will produce no output. | |||

| | | 1 | ||

| | | | ||

Only the values 0 and 1 are accepted. | Only the values 0 and 1 are accepted. | ||

Line 3,728: | Line 3,660: | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the input to the | This property specifies the input to the Linear Extrusion filter. | ||

| | | | ||

Line 3,735: | Line 3,667: | ||

The selected dataset must be one of the following types (or a subclass of one of them): | The selected dataset must be one of the following types (or a subclass of one of them): vtkPolyData. | ||

|- | |- | ||

| ''' | | '''Piece Invariant'''<br>''(PieceInvariant)'' | ||

| | | | ||

The value of this property | The value of this property determines whether the output will be the same regardless of the number of processors used to compute the result. The difference is whether there are internal polygonal faces on the processor boundaries. A value of 1 will keep the results the same; a value of 0 will allow internal faces on processor boundaries. | ||

| | | 0 | ||

| | | | ||

Only the values 0 and 1 are accepted. | |||

|- | |- | ||

| ''' | | '''Scale Factor'''<br>''(ScaleFactor)'' | ||

| | | | ||

The value of this property | The value of this property determines the distance along the vector the dataset will be translated. (A scale factor of 0.5 will move the dataset half the length of the vector, and a scale factor of 2 will move it twice the vector's length.) | ||

| | | 1 | ||

| | | | ||

|- | |- | ||

| ''' | | '''Vector'''<br>''(Vector)'' | ||

| | | | ||

The value of this property | The value of this property indicates the X, Y, and Z components of the vector along which to sweep the input dataset. | ||

| | | 0 0 1 | ||

| | | | ||

|} | |||

==Loop Subdivision== | |||

This filter iteratively divides each triangle into four triangles. New points are placed so the output surface is smooth. | |||

The Loop Subdivision filter increases the granularity of a polygonal mesh. It works by dividing each triangle in the input into four new triangles. It is named for Charles Loop, the person who devised this subdivision scheme. This filter only operates on triangles, so a data set that contains other types of polygons should be passed through the Triangulate filter before applying this filter to it. This filter only operates on polygonal data (specifically triangle meshes), and it produces polygonal output.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | |||

|- | |- | ||

| ''' | | '''Property''' | ||

| '''Description''' | |||

| '''Default Value(s)''' | |||

| '''Restrictions''' | |||

|- | |||

| '''Input'''<br>''(Input)'' | |||

| | | | ||

This property specifies the input to the Loop Subdivision filter. | |||

| | | | ||

| | |||

The selected object must be the result of the following: sources (includes readers), filters. | |||

The selected dataset must be one of the following types (or a subclass of one of them): vtkPolyData. | |||

|- | |||

| '''Number of Subdivisions'''<br>''(NumberOfSubdivisions)'' | |||

| | |||

Set the number of subdivision iterations to perform. Each subdivision divides single triangles into four new triangles. | |||

| 1 | |||

| | |||

The value must be greater than or equal to 1 and less than or equal to 4. | |||

Line 3,791: | Line 3,736: | ||

== | ==Mask Points== | ||

Reduce the number of points. This filter is often used before glyphing. Generating vertices is an option. | |||

The | The Mask Points filter reduces the number of points in the dataset. It operates on any type of dataset, but produces only points / vertices as output. This filter is often used before the Glyph filter, but the basic point-masking functionality is also available on the Properties page for the Glyph filter.<br> | ||

filter | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 3,824: | Line 3,750: | ||

| '''Restrictions''' | | '''Restrictions''' | ||

|- | |- | ||

| ''' | | '''Generate Vertices'''<br>''(GenerateVertices)'' | ||

| | | | ||

This property specifies | This property specifies whether to generate vertex cells as the topography of the output. If set to 1, the geometry (vertices) will be displayed in the rendering window; otherwise no geometry will be displayed. | ||

| | | 0 | ||

| | | | ||

Only the values 0 and 1 are accepted. | |||

|- | |- | ||

| ''' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the | This property specifies the input to the Mask Points filter. | ||

| | | | ||

| | | | ||

The selected object must be the result of the following: sources (includes readers), filters. | |||

The selected dataset must be one of the following types (or a subclass of one of them): vtkDataSet. | |||

The | |||

|- | |- | ||

| ''' | | '''Maximum Number of Points'''<br>''(MaximumNumberOfPoints)'' | ||

| | | | ||

The value of this property indicates the maximum number of points in the output dataset. | |||

| | | 5000 | ||

| | | | ||

The value must be greater than or equal to 0. | |||

|- | |- | ||

| ''' | | '''Offset'''<br>''(Offset)'' | ||

| | | | ||

The value of this property indicates the point in the input dataset from which to start masking. | |||

| 0 | | 0 | ||

| | | | ||

The value must be greater than or equal to 0. | |||

|- | |- | ||

| ''' | | '''On Ratio'''<br>''(OnRatio)'' | ||

| | | | ||

The value of this property specifies the ratio of points to retain in the output. (For example, if the on ratio is 3, then the output will contain 1/3 as many points -- up to the value of the MaximumNumberOfPoints property -- as the input.) | |||

| | | 2 | ||

| | | | ||

The value must be greater than or equal to 1. | |||

|- | |- | ||

| ''' | | '''Random'''<br>''(RandomMode)'' | ||

| | | | ||

If the value of this property is set to 0, then the points in the output will be randomly selected from the input; otherwise this filter will subsample regularly. Selecting points at random is helpful to avoid striping when masking the points of a structured dataset. | |||

| 0 | |||

| | | | ||

Only the values 0 and 1 are accepted. | |||

|- | |- | ||

| ''' | | '''Single Vertex Per Cell'''<br>''(SingleVertexPerCell)'' | ||

| | | | ||

Tell filter to only generate one vertex per cell instead of multiple vertices in one cell. | |||

| 0 | | 0 | ||

Line 3,909: | Line 3,822: | ||

| | |} | ||

==Material Interface Filter== | |||

The Material Interface filter finds volumes in the input data containg material above a certain material fraction. | |||

The Material Interface filter finds voxels inside of which a material<br> | |||

fraction (or normalized amount of material) is higher than a given<br> | |||

threshold. As these voxels are identified surfaces enclosing adjacent<br> | |||

voxels above the threshold are generated. The resulting volume and its<br> | |||

surface are what we call a fragment. The filter has the ability to<br> | |||

compute various volumetric attributes such as fragment volume, mass,<br> | |||

center of mass as well as volume and mass weighted averages for any of<br> | |||

the fields present. Any field selected for such computation will be also<br> | |||

be coppied into the fragment surface's point data for visualization. The<br> | |||

filter also has the ability to generate Oriented Bounding Boxes (OBB) for<br> | |||

each fragment.<br><br><br> | |||

The data generated by the filter is organized in three outputs. The<br> | |||

"geometry" output, containing the fragment surfaces. The "statistics"<br> | |||

output, containing a point set of the centers of mass. The "obb<br> | |||

representaion" output, containing OBB representations (poly data). All<br> | |||

computed attributes are coppied into the statistics and geometry output.<br> | |||

The obb representation output is used for validation and debugging<br> | |||

puproses and is turned off by default.<br><br><br> | |||

To measure the size of craters, the filter can invert a volume fraction<br> | |||

and clip the volume fraction with a sphere and/or a plane.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | |||

|- | |- | ||

| ''' | | '''Property''' | ||

| | | '''Description''' | ||

| '''Default Value(s)''' | |||

| '''Restrictions''' | |||

|- | |- | ||

| ''' | | '''Clip Type'''<br>''(ClipFunction)'' | ||

| | | | ||

This property sets the type of clip geometry, and | |||

the | associated parameters. | ||

| | | | ||

| | | | ||

The value must be set to one of the following: None, Plane, Sphere. | |||

|- | |- | ||

| '''Compute | | '''Compute OBB'''<br>''(ComputeOBB)'' | ||

| | | | ||

Compute Object Oriented Bounding boxes (OBB). When active the result of | |||

this computation is coppied into the statistics output. In the case | |||

that the filter is built in its validation mode, the OBB's are | |||

rendered. | |||

| 0 | |||

| | | | ||

Only the values 0 and 1 are accepted. | |||

|- | |- | ||

| ''' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

Input to the filter can be a hierarchical box data set containing image | |||

data or a multi-block of rectilinear grids. | |||

| | | | ||

| | | | ||

The selected object must be the result of the following: sources (includes readers), filters. | |||

The dataset must contain a cell array. | |||

|- | |- | ||

| ''' | | '''Invert Volume Fraction'''<br>''(InvertVolumeFraction)'' | ||

| | | | ||

Inverting the volume fraction generates the negative of the material. | |||

It is useful for analyzing craters. | |||

| 0 | | 0 | ||

Line 3,999: | Line 3,910: | ||

|- | |- | ||

| ''' | | '''Material Fraction Threshold'''<br>''(MaterialFractionThreshold)'' | ||

| | | | ||

Material fraction is defined as normalized amount of material per | |||

voxel. Any voxel in the input data set with a material fraction greater | |||

than this value is included in the output data set. | |||

| 0 | | 0.5 | ||

| | | | ||

The value must be greater than or equal to 0.08 and less than or equal to 1. | |||

| | |- | ||

| '''Output Base Name'''<br>''(OutputBaseName)'' | |||

| | |||

This property specifies the base including path of where to write the | |||

statistics and gemoetry output text files. It follows the pattern | |||

"/path/to/folder/and/file" here file has no extention, as the filter | |||

will generate a unique extention. | |||

| | |||

| | |||

|- | |||

| '''Select Mass Arrays'''<br>''(SelectMassArray)'' | |||

| | |||

Mass arrays are paired with material fraction arrays. This means that | |||

the first selected material fraction array is paired with the first | |||

selected mass array, and so on sequentially. As the filter identifies | |||

voxels meeting the minimum material fraction threshold, these voxel's | |||

mass will be used in fragment center of mass and mass calculation. | |||

A warning is generated if no mass array is selected for an individual | |||

material fraction array. However, in that case the filter will run | |||

without issue because the statistics output can be generated using | |||

fragments' centers computed from axis aligned bounding boxes. | |||

| | |||

| | |||

An array of scalars is required. | |||

|- | |- | ||

| ''' | | '''Compute mass weighted average over:'''<br>''(SelectMassWtdAvgArray)'' | ||

| | | | ||

For arrays selected a mass weighted average is computed. These arrays | |||

are also coppied into fragment geometry cell data as the fragment | |||

surfaces are generated. | |||

| | | | ||

| | | | ||

An array of scalars is required. | |||

|- | |||

| '''Select Material Fraction Arrays'''<br>''(SelectMaterialArray)'' | |||

| | |||

Material fraction is defined as normalized amount of material per | |||

voxel. It is expected that arrays containing material fraction data has | |||

been down converted to a unsigned char. | |||

| | |||

| | |||

An array of scalars is required. | |||

|- | |- | ||

| ''' | | '''Compute volume weighted average over:'''<br>''(SelectVolumeWtdAvgArray)'' | ||

| | | | ||

The | For arrays selected a volume weighted average is computed. The values | ||

of these arrays are also coppied into fragment geometry cell data as | |||

the fragment surfaces are generated. | |||

| | | | ||

| | |||

An array of scalars is required. | |||

|- | |- | ||

| ''' | | '''Write Geometry Output'''<br>''(WriteGeometryOutput)'' | ||

| | |||

If this property is set, then the geometry output is written to a text | |||

file. The file name will be coonstructed using the path in the "Output | |||

Base Name" widget. | |||

| 0 | |||

| | | | ||

Only the values 0 and 1 are accepted. | |||

|- | |||

| '''Write Statistics Output'''<br>''(WriteStatisticsOutput)'' | |||

| | | | ||

If this property is set, then the statistics output is written to a | |||

text file. The file name will be coonstructed using the path in the | |||

"Output Base Name" widget. | |||

| 0 | |||

| | | | ||

Only the values 0 and 1 are accepted. | |||

Line 4,062: | Line 4,013: | ||

== | ==Median== | ||

Compute the median scalar values in a specified neighborhood for image/volume datasets. | |||

The Median filter operates on uniform rectilinear (image or volume) data and produces uniform rectilinear output. It replaces the scalar value at each pixel / voxel with the median scalar value in the specified surrounding neighborhood. Since the median operation removes outliers, this filter is useful for removing high-intensity, low-probability noise (shot noise).<br> | |||

the | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 4,079: | Line 4,029: | ||

| '''Input'''<br>''(Input)'' | | '''Input'''<br>''(Input)'' | ||

| | | | ||

This property specifies the input to the Median filter. | |||

| | | | ||

| | | | ||

The selected | The selected object must be the result of the following: sources (includes readers), filters. | ||

The dataset must contain a point array with 1 components. | |||

The selected dataset must be one of the following types (or a subclass of one of them): vtkImageData. | |||

This filter creates a new cell array containing a geometric measure of each cell's fitness. Different quality measures can be chosen for different cell shapes. | |- | ||

| '''Kernel Size'''<br>''(KernelSize)'' | |||

This filter creates a new cell array containing a geometric measure of each cell's fitness. Different quality measures can be chosen for different cell shapes. Supported shapes include triangles, quadrilaterals, tetrahedra, and hexahedra. For other shapes, a value of 0 is assigned.<br> | | | ||

The value of this property specifies the number of pixels/voxels in each dimension to use in computing the median to assign to each pixel/voxel. If the kernel size in a particular dimension is 1, then the median will not be computed in that direction. | |||

| 1 1 1 | |||

| | |||

|- | |||

| '''Select Input Scalars'''<br>''(SelectInputScalars)'' | |||

| | |||

The value of thie property lists the name of the scalar array to use in computing the median. | |||

| | |||

| | |||

An array of scalars is required. | |||

|} | |||

==Merge Blocks== | |||

vtkCompositeDataToUnstructuredGridFilter appends all vtkDataSet<br> | |||

leaves of the input composite dataset to a single unstructure grid. The<br> | |||

subtree to be combined can be choosen using the SubTreeCompositeIndex. If<br> | |||

the SubTreeCompositeIndex is a leaf node, then no appending is required.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | |||

|- | |||

| '''Property''' | |||

| '''Description''' | |||

| '''Default Value(s)''' | |||

| '''Restrictions''' | |||

|- | |||

| '''Input'''<br>''(Input)'' | |||

| | |||

Set the input composite dataset. | |||

| | |||

| | |||

The selected dataset must be one of the following types (or a subclass of one of them): vtkCompositeDataSet. | |||

|} | |||

==Mesh Quality== | |||

This filter creates a new cell array containing a geometric measure of each cell's fitness. Different quality measures can be chosen for different cell shapes. | |||

This filter creates a new cell array containing a geometric measure of each cell's fitness. Different quality measures can be chosen for different cell shapes. Supported shapes include triangles, quadrilaterals, tetrahedra, and hexahedra. For other shapes, a value of 0 is assigned.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 4,178: | Line 4,178: | ||

<br> | <br> | ||

The remaining columns (there are N, one for each array) contain 2 matrices in triangular format. The upper right triangle contains the covariance matrix (which is symmetric, so its lower triangle may be inferred). The lower left triangle contains the Cholesky decomposition of the covariance matrix (which is triangular, so its upper triangle is zero). Because the diagonal must be stored for both matrices, an additional row is required | The remaining columns (there are N, one for each array) contain 2 matrices in triangular format. The upper right triangle contains the covariance matrix (which is symmetric, so its lower triangle may be inferred). The lower left triangle contains the Cholesky decomposition of the covariance matrix (which is triangular, so its upper triangle is zero). Because the diagonal must be stored for both matrices, an additional row is required √¢¬Ä¬î hence the N+1 rows and the final entry of the column named "Column".<br> | ||

Line 4,220: | Line 4,220: | ||

| | | | ||

| | | | ||

The selected object must be the result of the following: sources (includes readers), filters. | The selected object must be the result of the following: sources (includes readers), filters. | ||

The selected dataset must be one of the following types (or a subclass of one of them): vtkTable, vtkMultiBlockDataSet. | |||

|- | |- | ||

| '''Variables of Interest'''<br>''(SelectArrays)'' | | '''Variables of Interest'''<br>''(SelectArrays)'' | ||

| | | | ||

Choose arrays whose entries will be used to form observations for statistical analysis. | Choose arrays whose entries will be used to form observations for statistical analysis. | ||

| | | | ||

| | | | ||

An array of scalars is required. | An array of scalars is required. | ||

|- | |- | ||

| '''Task'''<br>''(Task)'' | | '''Task'''<br>''(Task)'' | ||

| | | | ||

Specify the task to be performed: modeling and/or assessment. | Specify the task to be performed: modeling and/or assessment. | ||

# "Statistics of all the data," creates an output table (or tables) summarizing the '''entire''' input dataset; | |||

| 3 | | 3 | ||

| | | | ||

The value must be one of the following: Statistics of all the data (0), Model a subset of the data (1), Assess the data with a model (2), Model and assess the same data (3). | |||

|- | |- | ||

| '''Training Fraction'''<br>''(TrainingFraction)'' | | '''Training Fraction'''<br>''(TrainingFraction)'' | ||

| | | | ||

Specify the fraction of values from the input dataset to be used for model fitting. The exact set of values is chosen at random from the dataset. | |||

| 0.1 | | 0.1 | ||

| | | | ||

The value must be greater than or equal to 0 and less than or equal to 1. | The value must be greater than or equal to 0 and less than or equal to 1. | ||

|} | |||

==Normal Glyphs== | |||

Filter computing surface normals. | |||

Filter computing surface normals.<br> | |||

{| class="PropertiesTable" border="1" cellpadding="5" | |||

|- | |||

| '''Property''' | |||

| '''Description''' | |||

| '''Default Value(s)''' | |||

| '''Restrictions''' | |||

|- | |||

| '''Consistency'''<br>''(Consistency)'' | |||

| | |||

The value of this property controls whether consistent polygon ordering is enforced. Generally the normals for a data set should either all point inward or all point outward. If the value of this property is 1, then this filter will reorder the points of cells that whose normal vectors are oriented the opposite direction from the rest of those in the data set. | |||

| 1 | |||

| | |||

Only the values 0 and 1 are accepted. | |||

|- | |- | ||

| '''Maximum Number of Points'''<br>''(Glyph Max. Points)'' | | '''Maximum Number of Points'''<br>''(Glyph Max. Points)'' | ||

Line 4,512: | Line 4,522: | ||

Particle Pathlines takes any dataset as input, it extracts the<br> | Particle Pathlines takes any dataset as input, it extracts the<br> | ||

point locations of all cells over time to build up a polyline<br> | point locations of all cells over time to build up a polyline<br> | ||

trail. | trail. The point number (index) is used as the 'key' if the points<br> | ||

are randomly changing their respective order in the points list,<br> | are randomly changing their respective order in the points list,<br> | ||

then you should specify a scalar that represents the unique<br> | then you should specify a scalar that represents the unique<br> | ||

Line 4,565: | Line 4,575: | ||

If a particle disappears from one end of a simulation and | If a particle disappears from one end of a simulation and | ||

reappears on the other side, the track left will be | reappears on the other side, the track left will be | ||

unrepresentative. | unrepresentative. Set a MaxStepDistance{x,y,z} which acts as a | ||

threshold above which if a step occurs larger than the value (for | threshold above which if a step occurs larger than the value (for | ||

the dimension), the track will be dropped and restarted after the | the dimension), the track will be dropped and restarted after the | ||

Line 4,581: | Line 4,591: | ||

displayed. Tracks longer then the Max will disappear and the | displayed. Tracks longer then the Max will disappear and the | ||

trace will apppear like a snake of fixed length which progresses | trace will apppear like a snake of fixed length which progresses | ||

as the particle moves. | as the particle moves. This length is given with respect to | ||

timesteps. | timesteps. | ||

Line 4,734: | Line 4,744: | ||

| '''Termination Time Unit'''<br>''(TerminationTimeUnit)'' | | '''Termination Time Unit'''<br>''(TerminationTimeUnit)'' | ||

| | | | ||

The termination time may be specified as TimeSteps or Simulation | The termination time may be specified as TimeSteps or Simulation time | ||

| 1 | | 1 | ||

Line 4,878: | Line 4,888: | ||

Sample data attributes at the points along a line. | Sample data attributes at the points along a line. Probed lines will be displayed in a graph of the attributes. | ||

The Plot Over Line filter samples the data set attributes of the current<br> | The Plot Over Line filter samples the data set attributes of the current<br> | ||

Line 4,915: | Line 4,925: | ||

data-arrays that are not available in all of the blocks. By default, | data-arrays that are not available in all of the blocks. By default, | ||

this filter only passes those point and cell data-arrays that are | this filter only passes those point and cell data-arrays that are | ||

available in all the blocks i.e. partial array are removed. | available in all the blocks i.e. partial array are removed. When | ||

PassPartialArrays is turned on, this behavior is changed to take a | PassPartialArrays is turned on, this behavior is changed to take a | ||

union of all arrays present thus partial arrays are passed as well. | union of all arrays present thus partial arrays are passed as well. | ||

Line 4,950: | Line 4,960: | ||

Extracts selection over time and then plots it. | Extracts selection over time and then plots it. | ||

This filter extracts the selection over time, i.e. | This filter extracts the selection over time, i.e. cell and/or point<br> | ||

variables at a cells/point selected are extracted over time<br> | variables at a cells/point selected are extracted over time<br> | ||

The output multi-block consists of 1D rectilinear grids where the x coordinate<br> | The output multi-block consists of 1D rectilinear grids where the x coordinate<br> | ||

Line 5,169: | Line 5,179: | ||

| 3 | | 3 | ||

Line 5,373: | Line 5,383: | ||

valid Python variable, it has to be accessed through a dictionary called<br> | valid Python variable, it has to be accessed through a dictionary called<br> | ||

arrays (i.e. arrays['array_name']). The points can be accessed using the<br> | arrays (i.e. arrays['array_name']). The points can be accessed using the<br> | ||

points variable. | points variable. <br> | ||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 5,436: | Line 5,446: | ||

This filter is the same filter used to generate level of detail for ParaView. | This filter is the same filter used to generate level of detail for ParaView. It uses a structured grid of bins and merges all points contained in each bin. | ||

The Quadric Clustering filter produces a reduced-resolution polygonal approximation of the input polygonal dataset. This filter is the one used by ParaView for computing LODs. It uses spatial binning to reduce the number of points in the data set; points that lie within the same spatial bin are collapsed into one representative point.<br> | The Quadric Clustering filter produces a reduced-resolution polygonal approximation of the input polygonal dataset. This filter is the one used by ParaView for computing LODs. It uses spatial binning to reduce the number of points in the data set; points that lie within the same spatial bin are collapsed into one representative point.<br> | ||

Line 5,744: | Line 5,754: | ||

This filter generates ribbon surface from lines. | This filter generates ribbon surface from lines. It is useful for displaying streamlines. | ||

The Ribbon filter creates ribbons from the lines in the input data set. This filter is useful for visualizing streamlines. Both the input and output of this filter are polygonal data. The input data set must also have at least one point-centered vector array.<br> | The Ribbon filter creates ribbons from the lines in the input data set. This filter is useful for visualizing streamlines. Both the input and output of this filter are polygonal data. The input data set must also have at least one point-centered vector array.<br> | ||

Line 6,363: | Line 6,373: | ||

This filter iteratively divide triangles into four smaller triangles. | This filter iteratively divide triangles into four smaller triangles. New points are placed linearly so the output surface matches the input surface. | ||

The Subdivide filter iteratively divides each triangle in the input dataset into 4 new triangles. Three new points are added per triangle -- one at the midpoint of each edge. This filter operates only on polygonal data containing triangles, so run your polygonal data through the Triangulate filter first if it is not composed of triangles. The output of this filter is also polygonal.<br> | The Subdivide filter iteratively divides each triangle in the input dataset into 4 new triangles. Three new points are added per triangle -- one at the midpoint of each edge. This filter operates only on polygonal data containing triangles, so run your polygonal data through the Triangulate filter first if it is not composed of triangles. The output of this filter is also polygonal.<br> | ||

Line 6,404: | Line 6,414: | ||

This filter integrates flow through a surface. | This filter integrates flow through a surface. | ||

The flow integration fitler | The flow integration fitler integrates the dot product of a point flow vector field and surface normal. It computes the net flow across the 2D surface. It operates on any type of dataset and produces an unstructured grid output.<br> | ||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 6,518: | Line 6,528: | ||

The dataset must contain a | The dataset must contain a array with 1 components. | ||

Line 6,557: | Line 6,567: | ||

The TableToStructuredGrid filter converts a vtkTable to a<br> | The TableToStructuredGrid filter converts a vtkTable to a<br> | ||

vtkStructuredGrid. | vtkStructuredGrid. One must specifies the columns in the input table to<br> | ||

use as the X, Y and Z coordinates for the points in the output, and the<br> | use as the X, Y and Z coordinates for the points in the output, and the<br> | ||

whole extent.<br> | whole extent.<br> | ||

Line 6,577: | Line 6,587: | ||

The dataset must contain a | The dataset must contain a array with 1 components. | ||

Line 6,620: | Line 6,630: | ||

Saves a copy of the data set for a fixed number of time steps. | Saves a copy of the data set for a fixed number of time steps. | ||

The Temporal Cache can be used to save multiple copies of a data set at different time steps to prevent thrashing in the pipeline caused by downstream filters that adjust the requested time step. | The Temporal Cache can be used to save multiple copies of a data set at different time steps to prevent thrashing in the pipeline caused by downstream filters that adjust the requested time step. For example, assume that there is a downstream Temporal Interpolator filter. This filter will (usually) request two time steps from the upstream filters, which in turn (usually) causes the upstream filters to run twice, once for each time step. The next time the interpolator requests the same two time steps, they might force the upstream filters to re-evaluate the same two time steps. The Temporal Cache can keep copies of both of these time steps and provide the requested data without having to run upstream filters.<br> | ||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 6,631: | Line 6,641: | ||

| '''Cache Size'''<br>''(CacheSize)'' | | '''Cache Size'''<br>''(CacheSize)'' | ||

| | | | ||

The cache size determines the number of time steps that can be cached at one time. | The cache size determines the number of time steps that can be cached at one time. The maximum number is 10. The minimum is 2 (since it makes little sense to cache less than that). | ||

| 2 | | 2 | ||

Line 6,659: | Line 6,669: | ||

Interpolate between time steps. | Interpolate between time steps. | ||

The Temporal Interpolator converts data that is defined at discrete time steps to one that is defined over a continuum of time by linearly interpolating the data's field data between two adjacent time steps. | The Temporal Interpolator converts data that is defined at discrete time steps to one that is defined over a continuum of time by linearly interpolating the data's field data between two adjacent time steps. The interpolated values are a simple approximation and should not be interpreted as anything more. The Temporal Interpolator assumes that the topology between adjacent time steps does not change.<br> | ||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 6,670: | Line 6,680: | ||

| '''Discrete Time Step Interval'''<br>''(DiscreteTimeStepInterval)'' | | '''Discrete Time Step Interval'''<br>''(DiscreteTimeStepInterval)'' | ||

| | | | ||

If Discrete Time Step Interval is set to 0, then the Temporal Interpolator will provide a continuous region of time on its output. | If Discrete Time Step Interval is set to 0, then the Temporal Interpolator will provide a continuous region of time on its output. If set to anything else, then the output will define a finite set of time points on its output, each spaced by the Discrete Time Step Interval. The output will have (time range)/(discrete time step interval) time steps. (Note that the time range is defined by the time range of the data of the input filter, which may be different from other pipeline objects or the range defined in the animation inspector.) This is a useful option to use if you have a dataset with one missing time step and wish to 'file-in' the missing data with an interpolated value from the steps on either side. | ||

| 0 | | 0 | ||

Line 6,695: | Line 6,705: | ||

Shift and scale time values. | Shift and scale time values. | ||

The Temporal Shift Scale filter linearly transforms the time values of a pipeline object by applying a shift and then scale. | The Temporal Shift Scale filter linearly transforms the time values of a pipeline object by applying a shift and then scale. Given a data at time t on the input, it will be transformed to time t*Shift + Scale on the output. Inversely, if this filter has a request for time t, it will request time (t-Shift)/Scale on its input.<br> | ||

{| class="PropertiesTable" border="1" cellpadding="5" | {| class="PropertiesTable" border="1" cellpadding="5" | ||

Line 6,808: | Line 6,818: | ||

Given an input that changes over time, vtkTemporalStatistics looks<br> | Given an input that changes over time, vtkTemporalStatistics looks<br> | ||

at the data for each time step and computes some statistical<br> | at the data for each time step and computes some statistical<br> | ||

information of how a point or cell variable changes over time. | information of how a point or cell variable changes over time. For<br> | ||

example, vtkTemporalStatistics can compute the average value of<br> | example, vtkTemporalStatistics can compute the average value of<br> | ||

"pressure" over time of each point.<br><br><br> | "pressure" over time of each point.<br><br><br> | ||

Note that this filter will require the upstream filter to be run on<br> | Note that this filter will require the upstream filter to be run on<br> | ||

every time step that it reports that it can compute. | every time step that it reports that it can compute. This may be a<br> | ||

time consuming operation.<br><br><br> | time consuming operation.<br><br><br> | ||

vtkTemporalStatistics ignores the temporal spacing. | vtkTemporalStatistics ignores the temporal spacing. Each timestep<br> | ||

will be weighted the same regardless of how long of an interval it<br> | will be weighted the same regardless of how long of an interval it<br> | ||

is to the next timestep. | is to the next timestep. Thus, the average statistic may be quite<br> | ||

different from an integration of the variable if the time spacing<br> | different from an integration of the variable if the time spacing<br> | ||

varies.<br> | varies.<br> | ||

Line 6,959: | Line 6,969: | ||

This filter converts 3-d cells to tetrahedrons and polygons to triangles. | This filter converts 3-d cells to tetrahedrons and polygons to triangles. The output is always of type unstructured grid. | ||

The Tetrahedralize filter converts the 3D cells of any type of dataset to tetrahedrons and the 2D ones to triangles. This filter always produces unstructured grid output.<br> | The Tetrahedralize filter converts the 3D cells of any type of dataset to tetrahedrons and the 2D ones to triangles. This filter always produces unstructured grid output.<br> | ||

Line 7,417: | Line 7,427: | ||

This filter moves point coordinates along a vector scaled by a point attribute. | This filter moves point coordinates along a vector scaled by a point attribute. It can be used to produce carpet plots. | ||

The Warp (scalar) filter translates the points of the input data set along a vector by a distance determined by the specified scalars. This filter operates on polygonal, curvilinear, and unstructured grid data sets containing single-component scalar arrays. Because it only changes the positions of the points, the output data set type is the same as that of the input. Any scalars in the input dataset are copied to the output, so the data can be colored by them.<br> | The Warp (scalar) filter translates the points of the input data set along a vector by a distance determined by the specified scalars. This filter operates on polygonal, curvilinear, and unstructured grid data sets containing single-component scalar arrays. Because it only changes the positions of the points, the output data set type is the same as that of the input. Any scalars in the input dataset are copied to the output, so the data can be colored by them.<br> |