Lat/Lon to UTM with Python
Russ Nelson has announced the release fo some nifty Python hacks for converting between Lat/Lon and UTM. This is part of the core of his Python GIS package.
posted by George Demmy at 8:21 AM
Friday, March 18, 2005
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2 Comments:
I'm not sure that that code works properly.
The LL to UTM to LL conversion is not identity.
10:04 AM EDT
Hi Tom,
I haven't looked at the code in a long time and I'm not the maintainer. However, it's not terribly surprising that you might not get what you started with by doing a projection followed with an inverse projection. Inverse projection solutions are often iterative and will converge on some number that is on identically equal to that used for input to the original projection.
Further, IIRC, there were other issues with the Python code related to hard-coded or limited options for ellipsoid, etc. Again, I haven't looked at that stuff in five years! Use at your own risk!
Regards,
G
3:24 PM EDT
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