[GRASS-user] r.sim.water and Spearfish60 sample data

[roberto caselli]

Anyway, I decided to install grass 6.3.0 on my pc but i have some problems (i will open another thread for this).
I think I will install linux ubuntu on my nb too, so can
use grass without cygwin.
About what Hamish said, the problem is in the elevation resolution?? Could use
the 6.3.3 script usinf elevation.dem instead of elevation.10m?

Thank you,
Roberto


Markus Neteler wrote:
> I made a test, it works (Linux box):
> 
> GRASS 6.3.svn (spearfish60):~/grass63 > sh
> raster/simwe/r.sim.water/spearfish.sh
> projection: 1 (UTM)
> ...
> cells:      294978
> Preparing input maps...
> Percent complete:
>  100%
> Creating support files...
> Elevation products for mapset [neteler] in [spearfish60]
> E-W SLOPE [elevation.dem_dx] COMPLETE
> N-S SLOPE [elevation.dem_dy] COMPLETE
>  100%
>  100%
>  100%
> r.sim.water --o elevin=elevation.dem dxin=elevation.dem_dx
> dyin=elevation.dem_dy       rain=elevation.dem_rain
> manin=elevation.dem_manin infil=elevation.dem_infil
> depth=elevation.dem_depth disch=elevation.dem_disch
> err=elevation.dem_err
> Running MAY 10 version
> 
> zmin,zmax 1066.000000 1840.000000
> simean,vmean,chmean,deltap,deltaw 0.000001 8.428620 19.670823
> 0.889825
> 1000000000000.000000
> MITER, timec 0 4.000000
>  100%
> min=0.000155
> max=0.316380
> min=0.000000
> max=25.006544
> min=0.000155
> max=0.316380
> Written:
>  Output water depth raster file:     elevation.dem_depth
>  Output water discharge raster file: elevation.dem_disch
>  Output simulation error raster file: elevation.dem_err
> 
> GRASS 6.3.svn (spearfish60):~/grass63 >
> 
> Since you used GRASS6.2.3, maybe give 6.3 a try?
> Possibly some bugfixes have not been backported.


I just tried the raster/simwe/r.sim.water/spearfish.sh script from
GRASS 6.2.3 [in 6.2.3], and it worked ok (Linux). It took an hour+ to
finish, but it got there.

The "segfault on line 32" refers to the line in the script which
r.sim.water is called.

I notice it used a lot of memory, here is what top reported while the
process was running:
   VIRT  RES  SHR
  1115m 290m 5756


Maybe that is the problem?

the script in 6.2.3 sets the region to match elevation.10m, while the
one in 6.3svn uses elevation.dem (30m). So the 6.3 script will use much
less memory and be faster.


Hamish





       
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