Hi, I am a beginner in GDAL and try to find out what works and what does not work. I have installed the new ver. 1.10 on Windows XP SP3 and I am especially interested in the new MAP driver. With the gcps2wld.py utility I found a behaviour which I cannot explain. On some .map files it prints out an worldfile as expected, on others it does not:
If I do gcps2wld.py L-37-143-A.map the answer is No GCPs found on file C:\maps\50000\L-37-143-A.map In contrast to this gdalinfo -noct L-37-143-A.map prints out a geotransform GeoTransform = 4563916.403948909, 4.777318174663853, 4.051208486634609e-013 5487310.512072737, -8.102416973269218e-013, -4.760840630639994 gdal_translate -of PNG -co WORLDFILE=YES L-37-143-A.map dummy.png results in a worldfile 4.7773181747 -0.0000000000 0.0000000000 -4.7608406306 4563918.7926079957 5487308.1316524222 which differs by half a pixel, but this is not my point. May be it can be explained by point vs area style. My question is: why doesn't gcps2wld find any gcps in the appended map file? Thanks Wolfgang ---------------------------------------------------------------- OziExplorer Map Data File Version 2.2 L-37-143-A.png C:\maps\50000\L-37-143-A.png 1 ,Map Code, WGS 84,, 0.0000, 0.0000,WGS 84 Reserved 1 Reserved 2 Magnetic Variation,,,E Map Projection,Mercator,PolyCal,No,AutoCalOnly,No,BSBUseWPX,No Point01,xy, 0, 0,in, deg, 44, 20.0037,N, 40, 59.9015,E, grid, , , ,N Point02,xy, 5826, 5424,in, deg, 44, 9.9996,N, 41, 14.9030,E, grid, , , ,N Point03,xy, 0, 5424,in, deg, 44, 9.9996,N, 40, 59.9015,E, grid, , , ,N Point04,xy, 5826, 0,in, deg, 44, 20.0037,N, 41, 14.9030,E, grid, , , ,N Point05,xy, 2913, 2712,in, deg, 44, 15.0052,N, 41, 7.4023,E, grid, , , ,N Point06,xy, 2913, 0,in, deg, 44, 20.0037,N, 41, 7.4023,E, grid, , , ,N Point07,xy, 0, 2712,in, deg, 44, 15.0052,N, 40, 59.9015,E, grid, , , ,N Point08,xy, 5826, 2712,in, deg, 44, 15.0052,N, 41, 14.9030,E, grid, , , ,N Point09,xy, 2913, 5424,in, deg, 44, 9.9996,N, 41, 7.4023,E, grid, , , ,N Point10,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point11,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point12,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point13,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point14,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point15,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point16,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point17,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point18,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point19,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point20,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point21,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point22,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point23,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point24,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point25,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point26,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point27,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point28,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point29,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Point30,xy, , ,in, deg, , ,N, , ,W, grid, , , ,N Projection Setup,,,,,,,,,, Map Feature = MF ; Map Comment = MC These follow if they exist Track File = TF These follow if they exist Moving Map Parameters = MM? These follow if they exist MM0,Yes MMPNUM,4 MMPXY,1,0,0 MMPXY,2,5826,0 MMPXY,3,5826,5424 MMPXY,4,0,5424 MMPLL,1, 40.998359, 44.333395 MMPLL,2, 41.248384, 44.333395 MMPLL,3, 41.248384, 44.166660 MMPLL,4, 40.998359, 44.166660 MM1B,3.426282 LL Grid Setup LLGRID,No,No Grid,Yes,255,16711680,0,No Labels,0,16777215,7,1,Yes,x Other Grid Setup GRGRID,No,No Grid,Yes,255,16711680,No Labels,0,16777215,8,1,Yes,No,No,x MOP,Map Open Position,0,0 IWH,Map Image Width/Height,5826,5424 -- View this message in context: http://osgeo-org.1560.x6.nabble.com/gcps2wld-not-finding-GCPs-tp5061752.html Sent from the GDAL - Dev mailing list archive at Nabble.com. _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
