Peng Du wrote: > Another question: is there any function similar to > get_map_row(…) but gets a column of data from raster image > rather than a row?
no. you'd have to load the whole map into memory for that, which is no good for very large maps. if you do have to do a lot of operations with full rows, and your maps are very big, you might consider to rotate the map by 90 degrees (AFAIR there's a contrib/ module in GRASS 4 or 5 to do that) or use r.out.mat to load the data into Matlab/Octave whos native array layout is by rows not columns (Fortran style). (but again they probably want to hold the whole array in memory) Hamish _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
