[vtkusers] Re: How to color eigenvectors

[WolfgangZ]

YaoHaofeng schrieb:
> I have a set of vectors and I want to color code them according to their 
> orientation, e.g. component on x-axis can be colored red, on y-axis 
> coded green etc. And I want to save the results to a image as well as 
> show it on the screen, now I can correctly save it as .vtk format but 
> not other image formats, can anybody tell me how to save as image 
> formats such as JPEG? I tried vtkJPEGWriter but because my vectors are 
> double type it gives me an error cannot save double into JPEG.
> 
> thanks
> 
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You can try vtkImageCast to convert your data to unsignd char what the
jpeg writer needs as input.

Regards
Wolfgang