Here's a response to a similar question a few weeks back:
http://www.nabble.com/Kriging-with-Matplotlib-to17281645.html
I haven't tried using the RandomRealizations package yet, but it looks good and well documented.
Regards,
Scott
Lionel Roubeyrie <lroubeyrie@...1068...> 06/11/08 8:47 AM >>>
Hi Jeff,
Do you have in your bags a similar approch but using kriging? For the moment
we use R via Rpy to make the computation, but if you know a more pythonic way
to do so, I'll appreciate 
Cordialy
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