[Paraview] StreamTracer filter on top of the Mask Points filter

[Hedieh Ebrahimi]

Hello,

I am trying to use the StreamTracer with custom source on my dataset, but
my Dataset has 100,000,000 cells.

First StreamTracer with custom source is not active on cell data so I had
to convert using "Cell Data to Point Data" filter.

Then, as my dataset is so big, I can not apply  the "StreamTracer with
custom source " directly on top of "CellDataToPointData" filter, so I tried
to use "MaskPoints" to reduce the number of points to 5000 and then apply
the filter.

I am trying to draw the velocity field in a cube. The velocity vector array
seems to have passed to the Mask Point as I check in the Information tab of
the Mask Point filter, but then I don´t see any thing. I have also checked
the following in the Mask Point filter:

1. Proportionally Distribute maximum number of Points
2.Random Sampling
3. Generate Vertices
4. Single Vertex per Cell

In the MaskPoints I can see the 5000 Points created if I switch to the
Point View.

Also in the StreamTracer I am using all the defaults. I tried changing the
Maximum Steps, but it didn´t have any effect.

Could anybody please tell me what is my error in this procedure?

Thanks a lot
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