Hi, I need to merge some Tiff4 (bw) raster and obtain 1 only more big tiff4 raster.
I'm try-ing this with gdal_merge.py and using a comand like this: python gdal_merge.py -o ../raster/216.tif -n 1 -ot Byte ../raster/10k/216*.tif Unfortunately the resulted raster is intellegible (the input raster was all clearly visible). It is an all black image :( I tried also with option "-n 0" but the result is the same. I analyze the input raster using gdalinfo, and the result is this. ------------------ >gdalinfo.exe ../raster/10k/216100.tif Driver: GTiff/GeoTIFF Files: ../raster/10k/216100.tif ../raster/10k/216100.tfw Size is 10065, 10049 Coordinate System is: LOCAL_CS["unnamed", UNIT["unknown",1]] Origin = (1561222.860009765700000,4927094.449960937700000) Pixel Size = (0.500000000000000,-0.500000000000000) Metadata: AREA_OR_POINT=Point TIFFTAG_RESOLUTIONUNIT=1 (unitless) TIFFTAG_SOFTWARE=Arc/Info TIFFTAG_XRESOLUTION=2 TIFFTAG_YRESOLUTION=2 Image Structure Metadata: COMPRESSION=CCITTFAX4 INTERLEAVE=BAND MINISWHITE=YES Corner Coordinates: Upper Left ( 1561222.860, 4927094.450) Lower Left ( 1561222.860, 4922069.950) Upper Right ( 1566255.360, 4927094.450) Lower Right ( 1566255.360, 4922069.950) Center ( 1563739.110, 4924582.200) Band 1 Block=10065x32 Type=Byte, ColorInterp=Palette Image Structure Metadata: NBITS=1 Color Table (RGB with 2 entries) 0: 255,255,255,255 1: 0,0,0,255 ----------------- What am I wrong ? Thx, -- ----------------- Andrea Peri . . . . . . . . . qwerty àèìòù -----------------
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