[GRASS-dev] r.series with file option - too many files open
markus.metz.giswork at gmail.com
Mon Jan 15 07:39:28 PST 2018
On Mon, Jan 15, 2018 at 4:12 PM, Paulo van Breugel <p.vanbreugel at gmail.com>
> Hi devs,
> I am trying to run r.series with a large number of input maps (5000).
Given the large number of input maps, I am using the 'file' option.
> GRASS 7.5.svn (latlon):~ > r.series output=speciescount method=sum
> I get the warning:
> WARNING: G__open(read): Unable to open
> Too many open files
> ERROR: Error reading reclass file for raster map <Eulemur_fulvus>
> Eulemur_fulvus is the 511th file on the list. From the help file, I
thought that using the file option will prevent one from hitting open files
limit and the size limit of command line arguments. Am I misunderstanding
the r.series helpfile?
the file option prevents too long command lines: instead of providing
hundreds of map names as input, only one file with the map names is provided
the manual is wrong:
Use the *file* option to analyze large amount of raster maps without
hitting open files limit and the size limit of command line arguments.
Use the -z flag to analyze large amount of raster maps without hitting open
files limit and the *file* option to avoid hitting the size limit of
command line arguments.
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> grass-dev at lists.osgeo.org
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