[Paraview] VTK reader does not populate properties dialog?

[Alexander Tchekhovskoy]

Hi Seb -- thank you for the explanation.  I had 3D magnetic streamline 
tracing in mind, which I was able to achieve by applying a cell to point 
filter, as Dave suggested.  However, surface LIC looks very attractive, 
and I'll give it a try.  Thank you all so much!  Alexander

On 6/15/12 3:50 PM, Sebastien Jourdain wrote:
> Since your data is a surface, you should use "Surface LIC" to show you
> B filed on the surface itself. For that you will need to load the
> Surface LIC plugin that is provided by default in the release
> binaries.
>
> Seb
>
> On Fri, Jun 15, 2012 at 3:10 PM, David E DeMarle
> <dave.demarle at kitware.com>  wrote:
>> The output type of this reader is a "curvilinear structured grid"
>> (vtkRectilinearGrid). ParaView will only volume render vtkImageData
>> (completely structured) and vtkUnstructuredGrid (completely
>> unstructured). So, convert what you have to an unstructured grid. A
>> simple way to do that is apply the threshold filter and make the
>> threshold include the entire range. Then volume rendering will be
>> available to use.
>>
>> For streamlines, the help for StreamTracer under Input Restrictions
>> (http://paraview.org/Wiki/ParaView/Users_Guide/List_of_filters#Stream_Tracer),
>> says the input must be a vtkDataSet (which all of the above subclass)
>> so you are fine there. But it also says that the data set must
>> contains a point centered array with three components. You may need to
>> apply the cell to point filter to do that, or possibly use the
>> calculator filter to combine three independent point arrays into a
>> single vector array.
>>
>> David E DeMarle
>> Kitware, Inc.
>> R&D Engineer
>> 21 Corporate Drive
>> Clifton Park, NY 12065-8662
>> Phone: 518-881-4909
>>
>>
>> On Fri, Jun 15, 2012 at 2:47 PM, Alexander Tchekhovskoy
>> <atchekho at princeton.edu>  wrote:
>>> Hi Seb, thank you for the blazing fast response!  This allows me to see
>>> slices through the variables on the grid, so the data is read-in correctly.
>>>
>>>
>>> However, I am at a loss how to do a 3D volume rendering or a streamline
>>> tracing of data on my structured grid.  In order to do that, as I
>>> understand, I need to apply a filter "Table To Structured Grid", as
>>> explained at
>>> http://paraview.org/Wiki/ParaView/Data_formats#Displaying_data_as_structured_grid
>>> . However, this filter is grayed out (screenshot:
>>> http://www.princeton.edu/~atchekho/grayed_out_filter.jpg ).
>>>
>>> What should I do in order to do 3D volume rendering or tracing streamlines?
>>>
>>> Thank you very much,
>>> Alexander
>>>
>>> On Fri, Jun 15, 2012 at 1:50 PM, Sebastien Jourdain
>>> <sebastien.jourdain at kitware.com>  wrote:
>>>> In the toolbar, you have to select "Surface" instead of "Outline", and
>>>> slightly on the left change "Solid Color" by your field name.
>>>>
>>>> Seb
>>>>
>>>> On Fri, Jun 15, 2012 at 1:16 PM, Alexander Tchekhovskoy
>>>> <atchekho at princeton.edu>  wrote:
>>>>> Hello All,
>>>>>
>>>>> I am having trouble reading a binary VTK file in Paraview. Here is a
>>>>> simple
>>>>> VTK file (zipped paraview_test.vtk:
>>>>> http://www.princeton.edu/~atchekho/paraview_test.zip , 29Kb) generated
>>>>> by
>>>>> visit_writer plugin for VisIt. The file uses a curvilinear structured
>>>>> grid.
>>>>>   The file opens and renders OK in VisIt.  However, when I open it in
>>>>> ParaView, the grid shows fine but the properties box stays empty (see
>>>>> screenshot at http://www.princeton.edu/~atchekho/properties_tab.jpg ,
>>>>> 83Kb),
>>>>> and I cannot visualize any variables.  I know the variables are there
>>>>> because the Information tab does show the variable ("B") that is in the
>>>>> file
>>>>> (see screenshot
>>>>> at http://www.princeton.edu/~atchekho/information_tab.jpg ,
>>>>> 115 Kb).  I tried searching on the web and found that this can happen if
>>>>> a
>>>>> reader plugin does not populate the properties
>>>>> (http://www.paraview.org/pipermail/paraview/2011-April/021081.html). In
>>>>> this
>>>>> case reader plugin is a standard VTK reader.  Is this a known bug?
>>>>>
>>>>> Thank you,
>>>>> Alexander
>>>>>
>>>>> _______________________________________________
>>>>> Powered by www.kitware.com
>>>>>
>>>>> Visit other Kitware open-source projects at
>>>>> http://www.kitware.com/opensource/opensource.html
>>>>>
>>>>> Please keep messages on-topic and check the ParaView Wiki at:
>>>>> http://paraview.org/Wiki/ParaView
>>>>>
>>>>> Follow this link to subscribe/unsubscribe:
>>>>> http://www.paraview.org/mailman/listinfo/paraview
>>>>>
>>>
>>>
>>> _______________________________________________
>>> Powered by www.kitware.com
>>>
>>> Visit other Kitware open-source projects at
>>> http://www.kitware.com/opensource/opensource.html
>>>
>>> Please keep messages on-topic and check the ParaView Wiki at:
>>> http://paraview.org/Wiki/ParaView
>>>
>>> Follow this link to subscribe/unsubscribe:
>>> http://www.paraview.org/mailman/listinfo/paraview
>>>