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