[Gdal-dev] UTM to MGRS.

[Frank Warmerdam]

On Wed, 30 Mar 2005 09:01:54 +0200, Michele Sanges
<michele.sanges at otomelara.it> wrote:
> Hi,
> 
> does OGR supports the coordinate transformation from the UTM system to MGRS (Military Grid Reference System) one?

Michele, 

Sorry, no OGR does not support MGRS.   It has been several months
since I did something with MGRS so my memory is a bit foggy on the
details, but I believe that MGRS coordinates interleave the X and Y
digits including some non-numeric prefixes to identify a grid square.
So it is hard to represent MGRS as a "coordinate system definition"
and a set of x/y points.   For that reason, I don't think it is really practical
to talk about having OGR support MGRS as a coordinate system. 

However, if you need to convert values to/from MGRS there is some
code for it buried in the NITF driver.  Try reviewing:

  gdal/frmts/nitf/mgrs.h

The MGRS code is derived from Geotrans. 

Best regards,
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