Hello gdal list, reprojecting raster images from epsg:4326 -> '+ortho +lat_0=90 lon_0=0' results in a not closed image, missing about 5-6°. (.i.e Pacman like) Reproducable for '+lon_0=90,180 and 270'.
Now shifting 'lon_0=6/-6' resolves the issue and the map is closed. Reproducable for every 'lon_0=84/96...' Editing and fine tuning the .wld file won't resolve the issue. The problem is reproducable with any image. The wmap_work.gif image ca be downloaded here (185k): http://iup.physik.uni-bremen.de/~schroete/wmap_work.gif I need to display the closed images with viewprot from 'lon_0=0/90/270'. What am i missing or doing wrong ? Regards Heiko Commands used: $ gdalwarp --version GDAL 1.6.0, released 2008/12/04 $ gdalwarp -of GTiff -s_srs 'epsg:4326' -t_srs '+proj=ortho +lon_0=0 +lat_0=90' wmap_work.gif wmap_out.gif The wmap_work.wld file: 0.1495016 0 0 -0.1495016 -180 90 $ gdalinfo wmap_work.gif | head -n 15 Driver: GIF/Graphics Interchange Format (.gif) Files: wmap_work.gif Size is 2408, 1208 Coordinate System is `' Origin = (-180.074750800000004,90.074750800000004) Pixel Size = (0.149501600000000,-0.149501600000000) Corner Coordinates: Upper Left (-180.0747508, 90.0747508) Lower Left (-180.0747508, -90.5231820) Upper Right ( 179.9251020, 90.0747508) Lower Right ( 179.9251020, -90.5231820) Center ( -0.0748244, -0.2242156) Band 1 Block=2408x1 Type=Byte, ColorInterp=Palette NoData Value=126 Metadata: _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
