[Numpy-discussion] interpolation in numpy

Zachary Pincus zachary.pincus@yale....
Thu Jul 9 09:22:11 CDT 2009

You might want also to look into scipy.ndimage.zoom.


On Jul 9, 2009, at 9:42 AM, Thomas Hrabe wrote:

> Hi all,
> I am not a newbie to python and numpy, but however, I kinda do not
> find a proper solution for my interpolation problem without coding it
> explicitly myself.
> All I want to do is to increase the resolution of an tree  
> dimensional array.
> I have a volume 'a'
> a = numpy.random.rand(3,3,3)
> now, I would like to expand a to a volume b of size say 10x10x10
> I want b to have interpolated values from a. One could think of this
> procedure as "zooming" into the volume, similar for images or so.
> numpy.interp does such a thing for 1d, but is there such function  
> for 3d, too?
> Thank you in advance for your help,
> Thomas
> FYI: I do not have scipy installed
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