[GRASS-user] r.li help

[Markus Neteler]

On Wed, Aug 12, 2009 at 3:38 PM, Paolo Cavallini<cavallini at faunalia.it> wrote:
> Markus Neteler ha scritto:
>> My result, upper left corner only, is attached (Mandriva Linux, 64bit).
>> Visually it looks ok to me.
>
> I'm also having problems with r.li:
>
>> r.li.shannon map=uso conf=latignano_5 output=provaln
> WARNING: Unable to open header file for raster map <@(null)>
> CHILD[pid = 1954]: unable to open mask ... continue without!!!
> WARNING: Unable to open header file for raster map <@(null)>
> CHILD[pid = 1953]: unable to open mask ... continue without!!!
> WARNING: Unable to open header file for raster map <@(null)>
> CHILD[pid = 1952]: unable to open mask ... continue without!!!
> WARNING: Unable to open header file for raster map <@(null)>
> CHILD[pid = 1951]: unable to open mask ... continue without!!!
> WARNING: Unable to open header file for raster map <@(null)>
> CHILD[pid = 1950]: unable to open mask ... continue without!!!
> WARNING: Unable to open header file for raster map <@(null)>
> CHILD[pid = 1949]: unable to open mask ... continue without!!!
> WARNING: Unable to open header file for raster map <@(null)>
> CHILD[pid = 1948]: unable to open mask ... continue without!!!
> WARNING: Unable to open header file for raster map <@(null)>
> CHILD[pid = 1947]: unable to open mask ... continue without!!!
> WARNING: Unable to open header file for raster map <@(null)>
> CHILD[pid = 1946]: unable to open mask ... continue without!!!
> WARNING: Unable to open header file for raster map <@(null)>
> CHILD[pid = 1945]: unable to open mask ... continue without!!!
> Segmentation fault
>
> Debian ustable, 64 bit.
> Any hint appreciated.

I see three options:
- use the debugger
  http://grass.osgeo.org/wiki/GRASS_Debugging#Using_GDB
- otherwise fill the source code with G_debug() statements to figure out
  where it fails (needs recompilation obviously)
- grant access to a machine where it fails, hoping that a GRASS
   developers tracks it down for you :)

Markus