[GRASS-user] r.watershed crashing grass.

[stephen sefick]

I will look tomorrow, but I think it was about 1000x1000.
hth

Stephen Sefick

On Fri, Jul 24, 2009 at 9:47 PM, Milton Cezar
Ribeiro<miltinho.astronauta at gmail.com> wrote:
> 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
>> >
>> >
>> > _______________________________________________
>> > grass-user mailing list
>> > grass-user at lists.osgeo.org
>> > 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
>
>



-- 
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