[Paraview] Visualising image data

[Bruce Jones]

Thanks David, this did the trick.

Cheers,
Bruce

On Thu Jan 22 2015 at 12:44:45 PM David E DeMarle <dave.demarle at kitware.com>
wrote:

>
> Click the gear icon in properties tab to get RI script.
> Then put this there:
> executive = self.GetExecutive()
>
> outInfo = executive.GetOutputInformation(0)
>
> outInfo.Set(executive.WHOLE_EXTENT(), 0, 4, 0, 7, 0, 9)
>
>
>
> David E DeMarle
> Kitware, Inc.
> R&D Engineer
> 21 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-881-4909
>
> On Thu, Jan 22, 2015 at 11:51 AM, Bruce Jones <bruce.david.jones at gmail.com
> > wrote:
>
>> Thanks for the response David. Could you elaborate on this? I am not sure
>> how to do what you are suggesting.
>>
>> Cheers,
>> Bruce
>>
>> On Thu Jan 22 2015 at 11:46:02 AM David E DeMarle <
>> dave.demarle at kitware.com> wrote:
>>
>>> Announce the whole extent in the RequestInformation script section.
>>> That should do the trick.
>>>
>>>
>>>
>>> David E DeMarle
>>> Kitware, Inc.
>>> R&D Engineer
>>> 21 Corporate Drive
>>> Clifton Park, NY 12065-8662
>>> Phone: 518-881-4909
>>>
>>> On Thu, Jan 22, 2015 at 11:17 AM, Bruce Jones <
>>> bruce.david.jones at gmail.com> wrote:
>>>
>>>> Hi all,
>>>>
>>>> I'm working on a programmable filter that needs to produce a
>>>> vtkImageData object. So far it appears to work, inspection of the
>>>> properties panel shows the object has the correct number of points/cells
>>>> and the data array contains the correct data. However I cannot get a
>>>> visualisation with any of the representations (surface, outline, wireframe
>>>> etc). Curiously, if i set the display to my data array then the color bar
>>>> appears with the correct values, but still not visualization.
>>>>
>>>> I am using the following code to produce the image data object.
>>>>
>>>> from vtk import *
>>>>
>>>> output = self.GetOutputDataObject(0);
>>>>
>>>> # Create a VTK Grid
>>>> grid = vtkImageData()
>>>> grid.SetOrigin(0, 0, 0) # default values
>>>> dx=10;
>>>> grid.SetSpacing(dx, dx, dx)
>>>> grid.SetDimensions(5, 8, 10) # number of points in each direction
>>>> # print grid.GetNumberOfPoints()
>>>> # print grid.GetNumberOfCells()
>>>> array = vtkDoubleArray()
>>>> array.SetNumberOfComponents(1) # this is 3 for a vector
>>>> array.SetNumberOfTuples(grid.GetNumberOfPoints())
>>>> for i in range(grid.GetNumberOfPoints()):
>>>>     if i < 200:
>>>>         array.SetValue(i, 1)
>>>>     else:
>>>>         array.SetValue(i, 2)
>>>>
>>>> grid.GetPointData().AddArray(array)
>>>> # print grid.GetPointData().GetNumberOfArrays()
>>>> array.SetName("unit array")
>>>> output.ShallowCopy(grid);
>>>>
>>>> Cheers,
>>>> Bruce
>>>>
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>>>
>>> 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:
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>>> Search the list archives at: http://markmail.org/search/?q=ParaView
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>>
>
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