What is needed in a vtk file for streamtracer to work?

ParaView Support
1

Hi

I am generating vtk files in the following format:

vtk DataFile Version 2.0

Unstructured grid legacy vtk file
ASCII

DATASET POLYDATA
POINTS 2622 float
0.0280 0.0000 0.7495
…
POINT_DATA 2622
VECTORS V float
0.0000 0.0009 0.0000
…

The data represents fluid flow velocity at fixed points in a sphere.

Glyphs work and show the flow but the streamtracer shows absolutely nothing.

Does my vtk file format need to be different?

Cheers in advance

2

Does your file include cells ?

3

No cells. Are cells needed for the streamtracer to work?

1 Like
4

Yes ! They are used during the integration step. See here for more technical details about how the filter works.

1 Like
5

Thanks Fellas,
I needed that information also…
Bob