[vtkusers] Point data, scalars, and picking in VTK
a_uplinger at hotmail.com
Sun Sep 9 00:44:00 EDT 2001
I have a couple of questions:
1. I'm trying to find the best way to visualize a data set consiting of x, y, z data plus 2 scalar values per data point. The data is not always on a grid. I am able to visualize the x,y,z data points ok- I am not sure of the best way to mix in the data set. I'm using vtkPoints for the x,y,z data.
I am looking at vtkProgrammableAttributeDataFilter and vtkProgrammableGlyphFilter to map the scalar data to the point data- is this the best way to proceed? Are there alternate methods?
2. Picking- I'm using spheres as glyphs in my data pipeline above. If I want to pick just one of the spheres (out of hundreds/thousands) - I always end up selecting all the spheres. Is there a way to select just one or two of the points and not all?
Any tips/suggestions/advice would be greatly appreciated.
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