[Freegis-list] tool to find out lat/lon --> UTM

[Frank Koormann]

Cere, 

* Paul Ramsey <pramsey at refractions.net> [050201 00:09]:
> Write up 20 lines of perl to wrap around your proj4 call. The zone value 
> is a simple categorization on your longitude, so it is trivial to 
> script. Possibly why noone has bothered to make such a think automagic.
> 

Thuban implements an 'on demand' estimate of UTM Zone based on the
layers bounding box:
http://www.intevation.de/cgi-bin/viewcvs-thuban.cgi/thuban/Thuban/UI/projdialog.py?rev=HEAD&content-type=text/vnd.viewcvs-markup

Check for the UTMProposeZoneDialog, actually the estimate is 4 lines of
code:

        x = x + 180
        x2 = x2 + 180
        center = (x2 - x) / 2 + x
        proposedZone = int(center / 6 + 1)

Regards,

        Frank

-- 
Frank Koormann                             <frank.koormann at intevation.de>
 Professional Service around Free Software       (http://intevation.net/)
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