[vtkusers] dramatic difference in performance btw C++ and python

[Berk Geveci]

Yes. Use numpy. I can't remember exactly how to do it but it goes like this:

from vtk.util import numpy_support

narray = numpy_support.vtk_to_numpy(image.GetPointData().GetScalars())
# do something with narray

-berk

On Fri, Aug 14, 2009 at 9:13 AM, Dominik Szczerba<dominik at itis.ethz.ch> wrote:
> I am walking my (large) image in C++ with GetScalarPointer and in python
> with GetComponentAsFloat (pointer stuff not available) and the latter
> performs dramatically slower. Is there still a way to speed it up?
>
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