[vtkusers] "Convert" output of vtkImageExtractComponents to a vector?

Cory Quammen cquammen at cs.unc.edu
Tue Aug 28 17:11:21 EDT 2012

Hi all,

I am using vtkImageExtractComponents to produce an image with three
components per pixel. I would like to treat these three components as
a vector field to pass to vtkGlyph3D. However, the data coming out of
vtkImageExtractComponents is treated as a scalar field rather than a
vector field, so I can't orient the glyphs according to the vectors in
this data array.

What might I do to get vtkGlyph3D to recognize this three-component
image data as a vector so that it can orient glyphs along the vector
direction? I'm assuming it's something simple, but everything I've
tried doesn't work.

Thank you in advance,

Cory Quammen
Research Associate
Department of Computer Science
The University of North Carolina at Chapel Hill

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