[SciPy-User] Obtaining constant contours

Zachary Pincus zachary.pincus@yale....
Fri Nov 5 08:53:25 CDT 2010

>> I've got a C extension that does "marching squares" on 2D raster data
>> to get iso-contour lines out (to sub-pixel resolution via linear
>> interpolation). It's pretty fast, if this is something you're going  
>> to
>> be doing a lot.
>> I'll send it along if desired...
> Yes, that would be great!

Attached. It's from a GPL'd project I did as part of my thesis; let me  
know if you need me to relicense.

You'll need to evaluate your function on a 2D grid and pass the grid  
to the contour-finder...


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