[GRASS-user] r.patch: GRASS-6.5svn

Rich Shepard rshepard at appl-ecosys.com
Fri Jan 22 10:50:42 EST 2010

On Fri, 22 Jan 2010, Glynn Clements wrote:

> Can you revert the previous patch with:
> 	patch -R -p0 < write_errno.patch
> then apply the attached patch with:
> 	patch -R -p0 < write_errors.patch
> and re-compile.
> That should cause it to print more than one error.

GRASS 6.5.svn (Oregon):/usr4/grassbase > r.patch in=$MAPS out=demOR --o 
WARNING: map [demOR] - unable to write row 24578 (No such file or
WARNING: map [demOR] - unable to write row 24578 (File too large)
WARNING: map [demOR] - unable to write row 24578 (File too large)
Creating support files for raster map <demOR>

   I've not before encountered 'file too large' ...

> Also, can you provide the output from:
> 	ls -l /usr4/grassbase/Oregon/PERMANENT/cell/demOR

   But this explains it:

  2147483647 Jan 22 07:39 /usr4/grassbase/Oregon/PERMANENT/cell/demOR

   That's a 2G file size for 10m resolution DEM of the entire state. Wow!

   What's the best strategy for decreasing file size? Do I not make a
state-wide DEM but make 2 or three instead? Should I keep the 9 separate
maps and concatenate as necessary for specific projects?

   This has been a _very_ useful lesson.

> BTW, do you get similar errors with other commands using the same
> region, e.g.:
> 	r.mapcalc 'test = rand(9999)'

GRASS 6.5.svn (Oregon):/usr4/grassbase > r.mapcalc 'test = rand(9999)'
Too few arguments (1) to function rand()
Parse error



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