[vtkusers] Computing pathlines using vtkPParticlePathFilter

[sujin]

Hi,

I am new to vtk. I am developing a program to compute pathlines on a 3D 
time varying velocity data set. I am using the vtkPParticlePathFilter 
class for this. I am using the parallel version as the dataset is quite 
big.

My implementation is based on the example provided in: 
Filters/ParallelFlowPaths/Testing/Cxx/TestPParticleTracers.cxx. I have 
changed TestTimeSource::RequestData to read the required data from the 
disk. I have made other changes to provide the proper extents, time 
steps, etc.

When I run the code, I am getting quite a few errors of the following 
type:
"Warning: In VTK-6.1.0/Filters/FlowPaths/vtkParticleTracerBase.cxx, line 
1152
vtkPParticlePathFilter (0x9085f0): the particle should have been added"

I am not quite sure what this error means. Some of the generated 
pathlines have fewer points than the number of time steps. Also, the 
number of pathlines being generated is more than the number of source 
points I provide.

Could someone please advise me on what this error means? Please let me 
know if you need more details about my code. I am using VTK version 
6.1.0.

Thanks
Sujin