[GRASS-user] Problem with r.basin in grass7
neteler at osgeo.org
Tue Oct 28 09:13:06 PDT 2014
On Fri, Oct 24, 2014 at 3:27 PM, Andrea Timmermann <timmermann at gmx.at> wrote:
> Hi Markus,
> Thanks for your answer! I have now however another problem ...
> When running:
> r.basin map=map at Elevation prefix=o coordinates=-71.10394196,43.9865230801
> threshold=19005 dir=C:\\Users\\Andrea\\Basins
> I get:
> " ....
> v.to.rast complete.
> All in RAM calculation...
> Reading raster map <o_map_drainage_e>...
> Calculating basins using vector point map...
> Current region rows: 21612, cols: 21612
> ERROR: G_calloc: unable to allocate 21612 * 4 bytes of memory at io.c:41
So, starting with GRASS 7 revision r62444 (see startup screen or
g.version -g) you will be told *which* module actually failed, so the
G_calloc error will be more useful. To get that, you will need to
update your GRASS GIS 7 installation.
However, a few thoughts before:
Current region rows: 21612, cols: 21612
i.e. 467078544 cells at 24 bytes/cell (AFAIK). That is:
> 467078544 * 24 / 1024 / 1024/ 1024
Leaving a bit for the operating system etc, you may exceed 12GB RAM if
I got the numbers right.
Are you sure that you want to use 467 million cells? If not, check
"g.region -p", perhaps the computational region resolution is too
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