[Paraview] PV 3.10.0 filters & contributing code

[Natalie Happenhofer]

Hi!

I've recently downloaded PV 3.10.0 and extended it with my own filters I've already build in PV 3.6 and PV 3.8.0. However, executing them in PV3.10.0, I get the error

Warning: In /home/happenhofer/svn/paraview/branches/ParaView-3.10.0/Servers/Filters/vtkTexturePainter.cxx, line 179
vtkTexturePainter (0x900c8d0): Failed to locate selected scalars. Will use image scalars by default.


ERROR: In /home/happenhofer/svn/paraview/branches/ParaView-3.10.0/VTK/Rendering/vtkOpenGLTexture.cxx, line 196
vtkOpenGLTexture (0x9083d20): No scalar values found for texture input!

I've googled those errors and one way to get rid of this seemed to be to name the arrays. Lamentably, the error persists after naming them. 

Here is a code fragment of setting the output (hor is a vtkDoubleArray):

hor -> SetName(name.c_str());
output -> CopyStructure(input);
output -> GetPointData() -> AddArray(hor);
output -> GetPointData() -> SetActiveScalars(name.c_str());
output -> Squeeze();

Do you have any ideas on this? As I said, in PV 3.6.x and PV 3.8.0 this code worked fine. 


Also, since I've been developing filters for ParaView quite a time now and some of my filters might be interesting to other users as well, so I thought about contributing code. 

I have coded a DataCalculator which operates on different data sets, for example if you have two datasets at different times and want to know the difference between the values, you could use this filter. 

Another filter of mine calculates the horizontal average of a dataset.

Lastly, I wrote a wrapper-routine to the VTK-and the XDMF-Writer already included in Paraview, so that they do not just write one file, but write a time series of files. This might be interesting if you perform some operations on a time-series read in and want to save the output without having to call the writer for each time step separately. 

If you are interested, please let me know. 

Greetings,
Natalie
 		 	   		  
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