id summary reporter owner description type status priority milestone component version severity resolution keywords cc 3458 blank rectangles from gdalwarp for large inputs dstahlke warmerdam "gdalwarp is generating output that has large black rectangles that should not be there when given a large input file (a bluemarble octant). The rectangles move around depending on the output file format and depending on the value passed to the ""-wm"" option. If I use ""-wm 1024"" or greater the problem goes away (the input file is 1.3GB). The warp command I am using is: {{{ gdalwarp -rn -te -4000000 -3000000 0 3000000 \ -t_srs '+proj=gnom +lon_0=-90.0 +lat_0=58 +a=5500000 +b=5500000' \ -tr 2000 2000 -co 'TILED=YES' zz-src.tif zz.tif }}} The same error happens with other projections, and without the TILED=YES option. Valgrind doesn't report any errors. I've attached a small thumbnail showing what it looks like." defect closed normal 1.7.2 Algorithms 1.7.1 normal fixed warper