[GRASS-user] r.watershed crashing grass.

[Milton Cezar Ribeiro]

Hi Stephen,

Thanks for your reply.
I thank the disk space is not problem because I still have 100Gb free.
What was the dimension (row and columns) that you got success?!
May be 7200x7200 is to large.  (?)

Cheers

milton

2009/7/24 stephen sefick <ssefick at gmail.com>

> Do you have enough hard disk space?  I have had a problem running
> r.watershed on very large datasets (my computer is much more modest).
> I have had luck resampling the data to a larger resolution and then
> running r.watershed.  r.watershed crashes at 10m res but will run just
> fine at 50m.  1GB RAM.
>
> Stephen Sefick
>
> On Fri, Jul 24, 2009 at 5:57 PM, Milton Cezar
> Ribeiro<miltinho.astronauta at gmail.com> wrote:
> > Dear all,
> >
> > I am trying run a r.watershed command with one 7200x7200 DEM map.
> > But after one day running, the system crash without finish the output
> > generation.
> > Please, see below (2 warnings before crash).
> > By the way I am running grass 6.4.0 SVN (rc4?) under Msys/Vista
> > on a 6Gb/64 bits machine.
> >
> > Thanks for the help,
> >
> > milton
> > ===
> > GRASS 6.4.0svn (newLocation):c:/Users/famiglia > g.region -p
> > projection: 0 (x,y)
> > zone:       0
> > north:      -23.99986111
> > south:      -26.00013889
> > west:       -49.00013889
> > east:       -46.99986111
> > nsres:      0.00027778
> > ewres:      0.00027778
> > rows:       7201
> > cols:       7201
> > cells:      51854401
> >
> >
> > GRASS 6.4.0svn > g.region rast=FabioASTGTM_S2526W04948_dem
> > GRASS 6.4.0svn > r.watershed.exe -m 4096
> > elevation=FabioASTGTM_S2526W04948_dem
> > stream=FabioASTGTM_S2526W04948_dem_rwatershed_stream_thres0100
> threshold=100
> > --o
> >  WARNING: Subprocess failed with exit code 255
> > WARNING: category information for
> >          [FabioASTGTM_S2526W04948_dem_rwatershed_stream_thres0100] in
> >          [PERMANENT] missing or invalid
> >
> >
> > _______________________________________________
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> > http://lists.osgeo.org/mailman/listinfo/grass-user
> >
> >
>
>
>
> --
> Stephen Sefick
>
> Let's not spend our time and resources thinking about things that are
> so little or so large that all they really do for us is puff us up and
> make us feel like gods.  We are mammals, and have not exhausted the
> annoying little problems of being mammals.
>
>                                                                -K. Mullis
>
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