<Moses.Gone <at> t-systems.com> writes: > > > > Hello List, > I am using SDE as my raster data source with the ultimate goal to tile this dataset: I am running the following gdal_translate command to generate the initial VRT: > > gdal_translate -projwin 390605 5588320 410128 5568805 -a_srs EPSG:25832 -a_nodata none -of vrt SDE:server,5153,db,user,pw,table,image clippedvrt.vrt > > Tiling the resultant VRT produces tiff with weird colors. The colors are either intensified or totally different from the original as you can see from the attached test results > > > https://drive.google.com/file/d/0Bw-iJv3cImO7bkZYRVZERi1rTTg/edit?usp=sharing > > could someone shade some light as to what might be happening.
Hi, I have seen something similar when I have created a VRT file from one paletted image but the following images have used different palettes which were optimized for each image. Now the palette of the first image was written into the VRT file and when it was applied to the other images the result looked pretty funny. In my case I used the gdalbuildvrt tool which gave me a helpful warning and a useful hint: " The end result might produce weird colors. You're advised to preprocess your rasters with other tools, such as pct2rgb.py or gdal_translate -expand RGB to operate gdalbuildvrt on RGB rasters instead." Perhaps you have somehow similar situation. -Jukka Rahkonen- _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
