On Tue, Nov 2, 2010 at 4:41 PM, <razmjoo...@faunalia.co.uk> wrote: > Hi Markus > > Many thanks for your response. In the past versions, the patched raster > used to have an odd values.
No, this is rather impossible (perhaps you refer to the odd number of pixels in a moving raster window). > I use Grass 6.4 from Ubuntu 10.10 64 bit repo. Master question: how many files do you plan to patch? Markus > Cheers > Sab > > > >> On Tue, Nov 2, 2010 at 2:03 PM, <razmjoo...@faunalia.co.uk> wrote: >>> Dear all >>> >>> Is there a limit on the number of rasters for r.patch? >> >> How funny, we had the same question at the same time... :) >> From GRASS 6.4+ there is no more limit despite the limit of open files per >> process (which depends on the operating system; for Linux it is >> usually 1024 files). >> >> To increase that: >> >> The limit of open files per process was reached (64bit Linux: 1024 >> files; ulimit -n) >> To overcome this limit, the "nofile" parameter needs to be increased in >> the >> /etc/security/limits.conf >> file. Here an increase to 1500 files (use * instead of neteler to aply >> it to all users): >> >> #<domain> <type> <item> <value> >> neteler hard nofile 1500 >> >> >> -------------------- >> But myself, I got troubles when having registered the maps with >> r.external: >> >> GRASS 6.4.1svn (patUTM32):~ > r.patch in=`g.mlist type=rast >> pattern=dtm00* sep=comma mapset=dtm_1m_external` out=dtm_trentino_2m >> ERROR 1: >> TIFFOpen:/geodata/base_cartography/pat_DTM_LIDAR_2007_UTM_WGS84/geotiffs/dtm000501.tif: >> Too many open files >> WARNING: Unable to open >> '/grassdata/patUTM32/dtm_1m_external/cell_misc/dtm000501/f_format' >> WARNING: quantization file [dtm000501] in mapset [dtm_1m_external] missing >> WARNING: Unable to open raster map <dtm000...@dtm_1m_external> >> ERROR: One or more input raster maps not found >> >> So far I could not find out the reason. Here I am using 500 files >> registered >> with r.external. >> >> Help welcome, >> Markus >> > > > _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user