[GRASS-dev] Re: r.water.outlet for lat/lon

[Andy Wickert]

On Sat, Jul 2, 2011 at 3:19 PM, Helmut Kudrnovsky <hellik at web.de> wrote:

> Hi
>
> >Just had a long chat with myself on grass-user in which I eventually
> figured
> >out that r.water.outlet would need an extra line added to work with
> lat/lon
> >grids that involved the 180 meridian wraparound. The modification to
> main.c
> >is (with surrounding lines for context) is:
> >
> >G_usage();
> >exit(EXIT_FAILURE);
> >    }
> >
> >  E = G_adjust_east_longitude(E,window.west); // <-- NEW LINE; for using
> >lat/lon data that straddle the 180 meridian
> >
> >    if (E < window.west || E > window.east || N < window.south ||
> >N > window.north) {
> >
> >Along with this, should the HTML help be updated to not just say
> >"northing/easting" for pour point locations, but also say "lat/lon"?
>
> it would be fine if you could open a ticket in trac for this issue
> (http://trac.osgeo.org/grass/wiki#BugTracking ,
> http://trac.osgeo.org/grass/report) and, if possible, add a patch
> there (http://trac.osgeo.org/grass/wiki/HowToSVN#LocalDiffs), so all your
> work isn't getting lost in the mailing list.
>
> best regards
> Helmut
>
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>


Thanks for letting me know! I will do that.
Andy
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