<div>Hi there,</div>
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<div>I have a couple of GIFs with wld files, but the original Projection is not the one I want, I tried to use the Proj4 to reproject them on-the-fly, but it takes really long to perform the map request, therefore I tried to preprocess the images with GDAL tools, but I've got some problems here:
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<div>1. problem with gdalwarp: trying to mosaic the images into one output file, but only the first image has the correct image color, the other images are rendered with strange colors, is this a common problem if using gdalwarp to mosaic images?
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<div>2.problem with gdal_merge.py: after trying the gdalwarp command, I've tried the gdal_merge.py command to merge all the images together with the -pct parameter, unfortunately, the merged image is the same as the first try. is it possible to merge images using the command with the correct color table?
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<div>BTW: I can not use the gdal_translate command, since there are gaps between the reprojected images.</div>
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<div>thanks for your info.</div>
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<div>zhonghai</div>