[GRASS-user] Subset several bands of data at one go
Hi all! As you know landsat data has separate files for different bands. Creating a subset is a wise option to work on region of our interest. Therefore, I used this method to subset my image - d.zoom || g.region g.region -p r.mapcalc *subset*=original as suggested in http://osgeo-org.1803224.n2.nabble.com/Raster-Map-subset-td4523291.html#a4526819 . But with this I can subset one band data at a time. Is it somehow possible to use i.group and region definition to obtain subsets of all bands? Scripting might be an answer but I have no much idea about it. Thanks and regards, Chethan S. ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] Subset several bands of data at one go
But with this I can subset one band data at a time. Is it somehow possible to use i.group and region definition to obtain subsets of all bands? Scripting might be an answer but I have no much idea about it. what about working with different computational regions? http://grass.osgeo.org/grass64/manuals/html64_user/rasterintro.html : [...] As a general rule in GRASS: * Raster output maps have their bounds and resolution equal to those of the current computational region. * Raster input maps are automatically cropped/padded and rescaled (using nearest-neighbour resampling) to match the current region. * Raster input maps are automatically masked if a raster map named MASK exists. The MASK is only applied when reading maps from the disk. [...] so you can do calculations/run modules in different computational region without extracting of many subsets of your data before. best regards Helmut ___ WEB.DE DSL Doppel-Flat ab 19,99 euro;/mtl.! Jetzt mit gratis Handy-Flat! http://produkte.web.de/go/DSL_Doppel_Flatrate/2 smime.p7s Description: S/MIME Cryptographic Signature ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
