On Thu, Jun 5, 2014 at 12:42 PM, Javier Martínez-López < [email protected]> wrote:
> Solved! Margherita pointed out that the original script was messing up > the values of the projection because in one of the testing versions I > was using integer values instead of characters for the region > resolution parameter, and since then the script started giving this > error, which I did not noticed. That is why it was running in one > machine and not in the other one... > > This is the test script about parallel computing using different > regions [1]. I will test it and let you know if it works with a large > segmentation processing job. > > Thank you very much! > > Cheers, > > > Javier > > [1] > https://github.com/javimarlop/eHabpy/blob/master/pas/parallel_grass_example.py > > Hi Javier, do you know about PyGRASS GridModule [1]? Would it solve what you are doing? If you stay with your code, it might be safer for you to pass GRASS_REGION in the env parameter. I hope it works with run_command (and not only with underlying Popen [2]). You can see what I mean in the example with Popen [3]. Vaclav [1] http://grass.osgeo.org/grass71/manuals/pygrass/modules_grid.html [2] https://docs.python.org/2/library/subprocess.html#popen-constructor [3] http://trac.osgeo.org/grass/browser/sandbox/wenzeslaus/gunittest/grass_py_static_check.py?rev=60678#L65 > On Thu, Jun 5, 2014 at 4:46 PM, Markus Neteler <[email protected]> wrote: > > On Thu, Jun 5, 2014 at 10:27 AM, Javier Martínez-López > > <[email protected]> wrote: > >> Hello all, > >> > >> trying to create a temporary region within a python GRASS script using: > >> > >> os.environ['GRASS_REGION'] = grass.region_env(res=150) > >> > >> I get the following errors on a CentOS server: > >> > >> ERROR: Syntax error in cell header > >> ERROR: Field <projection> missing > > > > What does > > g.region -p > > > > say in that location? > > > > best, > > Markus > _______________________________________________ > grass-dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-dev >
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