[GRASS-user] Question about r.watershed and flow accumulation grid

[Markus Neteler]

On Sat, Feb 14, 2015 at 3:45 PM, Thomas Adams <tea3rd at gmail.com> wrote:
> Micha,
>
> You raise very good questions. I think you may have misunderstood; perhaps I
> explained poorly. r.watershed is NOT running slowly; I have had no problems
> with r.watershed performance. The performance slowness I have had is with
> r.carve -- it is running very slowly.


I just tried the example mentioned in r.carve's manual page: on my
small laptop it takes 2.5 seconds for 2 million pixels.
How many rows/columns do you have?

Markus