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

[Dominik Szczerba]

Many thanks, will give it a try!
- Dominik

Berk Geveci wrote:
> 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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>> . . . . . . . i t ' i s   r e s e a r c h   f o u n d a t i o n
>> . . . . . . . . . . . . . . . . . . . . http://www.itis.ethz.ch
>>
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-- 
d o m i n i k   s z c z e r b a ,   p h d . . . . . . . . . . .
c o m p u t a t i o n a l   l i f e   s c i e n c e   g r o u p
. . . . . . . i t ' i s   r e s e a r c h   f o u n d a t i o n
. . . . . . . . . . . . . . . . . . . . http://www.itis.ethz.ch