On Fri, Apr 4, 2014 at 1:47 PM, Martin van Brakel <[email protected]> wrote: > Hi list, > > i am processing plenty of modis subsets into a group called "pca" > > when using WinGRASS it gives an error > > GRASS 7.0.svn> i.pca --overwrite input=pca output_prefix=_msub > Computing covariance matrix... > 100% > ERROR: No non-null values > GRASS 7.0.svn>
Did you set the computational region to the map beforehand? g.region rast=pca -p then i.pca ... See also: http://grasswiki.osgeo.org/wiki/Computational_region Since we currently have issues on the server (slow), see also the wiki mirror at: http://grass.fsv.cvut.cz/wiki-mirror/index.php/Computational_region hope this helps Markus _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
