[GRASS-dev] r.watershed at poles

[Andy Wickert]

On Thu, Oct 1, 2015 at 3:52 PM, Markus Neteler <neteler at osgeo.org> wrote:

> On Thu, Oct 1, 2015 at 7:10 AM, Andy Wickert <andrewwickert at gmail.com>
> wrote:
> > Dear GRASS developers,
> >
> > Would you know of an easy way to make r.watershed work in
> latitude/longitude
> > over the pole of a planet (in my case, over Antarctica) by specifying
> that
> > the polar boundary in lat/lon is not a sink?
>
> Wouldn't be a stereographic projection more appropriate?
>
>
> https://grass.osgeo.org/uploads/images/Gallery/raster/polar_stereographic.png
>
> Best
> Markus
>

Thanks for the suggestion. However, my goal is to run r.watershed across
the whole globe, so a stereographic projection would an ad-hoc solution.

(I have also had problems in the past projecting between polar
stereographic and lat/lon, but this is a secondary issue.)

Andy
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