Jorge, It's a south up image. If the gsd x value is negative the image is an east to west image. Normally a north up image will have a positive gsd x and a negative gsd y.
Marty -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Jorge Arevalo Sent: Friday, August 10, 2012 9:39 AM To: [email protected] Subject: [gdal-dev] What should I expect? Hello, If while I'm executing gdalinfo against a raster layer I get a positive value for pixel size Y, what of these scenarios is possible? - The raster's map coordinate system sets the origin of the data in the upper left corner. - The raster is not georeferenced and its coordinates are interpreted as image pixels, instead of map units. - Any other situation (corrupt file?, other?) I know this value is almost always negative. For example, in case of UTM coordinate system. But, how common is to have a positive value for Y coordinate? Many thanks in advance -- Jorge Arevalo http://www.libregis.org _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
