[Paraview] python/VTK errors in Paraview

[Karl Battams]

Thanks!  That did it!

Next problem, along similar lines.  I want to simply volume render a vtk
file I have.  If I do everything from within the paraview app, it works
fine.  But if I try to do the following from the python shell (or pvpython)
it seg faults on me:

>>> reader=LegacyVTKReader(FileNames="/home/battams/model.vtk")
>>> Show(reader)
>>> SetDisplayProperties(reader,Representation='Volume')

Here's the error I get in my terminal:

ERROR: In
/home/battams/Builds/Paraview3/ParaView3/VTK/VolumeRendering/vtkFixedPointVolumeRayCastMapper.cxx,
line 1467
vtkFixedPointVolumeRayCastMapper (0x7fc7b7368010): Cell Scalars not
supported
[3]    Segmentation fault            paraview

It looks to me like the problem is my model because of the "Cell scalars not
supported" message.  But I can load/view it fine if I just use the ParaView
GUI.

Apologies in advance if I'm making some sort of stupid beginner mistake...

~~Karl

On Fri, Aug 21, 2009 at 11:08 AM, Utkarsh Ayachit <
utkarsh.ayachit at kitware.com> wrote:

> When you creating the readers using python shell from the GUI (not
> pvpython or pvbatch), it's recommended that you set the FileName in
> the constructor itself. So try:
>
> > reader = LegacyVTKReader(FileNames="foo.vtk")
>
> Utkarsh
>
> On Fri, Aug 21, 2009 at 10:04 AM, Karl Battams<karlbattams at gmail.com>
> wrote:
> > Hi,
> >
> > I'm using the latest CVS build of Paraview (on Ubuntu) and am getting
> some
> > errors when I try to do python scripting from the Python shell.  I start
> > ParaView and bring up the python shell, and type the simple command:
> >
> >>>> reader=LegacyVTKReader()
> > As soon as I enter this command, the error console pops up saying:
> >
> > ERROR: In
> > /home/battams/Builds/Paraview3/ParaView3/VTK/Filtering/vtkExecutive.cxx,
> > line 757
> >
> > vtkCompositeDataPipeline (0x253f0b0): Algorithm
> > vtkFileSeriesReader(0x2560aa0) returned failure for request:
> vtkInformation
> > (0xd1e190)
> >
> > Debug: Off
> >
> > Modified Time: 197255
> >
> > Reference Count: 1
> >
> > Registered Events: (none)
> >
> > Request: REQUEST_DATA_OBJECT
> >
> > ALGORITHM_AFTER_FORWARD: 1
> >
> > FORWARD_DIRECTION: 0
> >
> > It has a similar error for vtkPDataSetReader.  It then has the lines:
> >
> > ERROR: In
> >
> /home/battams/Builds/Paraview3/ParaView3/Servers/Common/vtkSelfConnection.cxx,
> > line 147
> > vtkSelfConnection (0x14ef4f0): Failed to locate object with ID: 154
> >
> > ERROR: In
> >
> /home/battams/Builds/Paraview3/ParaView3/Servers/ServerManager/vtkSMOutputPort.cxx,
> > line 293
> >
> > vtkSMOutputPort (0x152f200): Missing data information.
> >
> > And then some more output like the top part.
> >
> > Now what seems odd to me is that it is complaining about errors in my
> build
> > directory, but I installed Paraview to /usr/local.  But the same error
> > persists, even if I actually remove the build directory before running
> > paraview.  But perhaps I'm misunderstanding something.  Regardless, I get
> > the above errors when python scripting.  Any ideas?
> >
> > Also, in my CMakeOutput.log file I see the message:
> >
> > Determining if glXGetProcAddressARB exists in GL/glx.h FALSE
> >
> > ...leading to an error...
> >
> >
> /home/battams/Builds/Paraview3/ParaView3/VTK/Rendering/CheckglXGetProcAddressARB.cxx:
> > In function 'int main(int, char**)':
> >
> /home/battams/Builds/Paraview3/ParaView3/VTK/Rendering/CheckglXGetProcAddressARB.cxx:33:
> > error: 'glXGetProcAddressARB' was not declared in this scope
> > make[1]: ***
> > [CMakeFiles/cmTryCompileExec.dir/CheckglXGetProcAddressARB.cxx.o] Error 1
> > make[1]: Leaving directory
> > `/home/battams/Builds/paraview-bin/CMakeFiles/CMakeTmp'
> > make: *** [cmTryCompileExec/fast] Error 2
> >
> > Is this related?  Or an entirely different problem?  (or not a problem at
> > all?)
> >
> > Thanks!
> >
> > ~~Karl
> >
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