[Proj] MGRS/USNG support?

Eric Miller EMiller at dfg.ca.gov
Thu May 4 18:51:18 EDT 2006

Yea, the more I think about it the more I think it'd be really hard to shoehorn in.  The "layered service" approach is probably the right way.  

>>> warmerdam at pobox.com 5/4/2006 12:26 PM >>>


I'm ... not supportive but opposed would be a bit strong.

I looked over this problem a while ago, and came to the conclusion that
MGRS just doesn't fit into the scheme of the PROJ.4 API with x/y (and
sometimes z) coordinates and an associated coordinate system.

So I think if we offered MGRS support in PROJ.4 it would be a special
"layered service", and not built into pj_inv(), pj_fwd() and pj_transform().

For this reason, when I needed MGRS handling in GDAL I just hacked to
together local handling for it.

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