[GRASS-dev] r.watershed at poles

[Markus Neteler]

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