Re: [gdal-dev] Cannot set transparent color for GeoTIFFs

2010-02-08 Thread Ralf Wagner
Thanks a lot!!! It was crucial - to expand color table to RGB! After that everything works perfect. Once again: big thank you! Ralf Wagner Chaitanya kumar CH pisze: From what Ed said, editing the color table is useless. Try to expand the tiff to rgb and proceed from there. At least the error

Re: [gdal-dev] Cannot set transparent color for GeoTIFFs

2010-02-08 Thread Ralf Wagner
generation: "Unable to export color table to GeoTIFF file" and resulting file is broken. So, I am stuck... Do you have any idea what can I try next? Best regards, Ralf Wagner ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev

Re: [gdal-dev] Cannot set transparent color for GeoTIFFs processed by gdal_retile

2010-02-04 Thread Ralf Wagner
entry in color table in my VRT files to '0'. It didn't work. But if you are saying that this is way to go, I will try to do more experiments (and I will dig deeper into VRT format) . Best regards, Ralf Wagner Chaitanya kumar CH pisze: Ralf, Try the -addalpha and -srcnodata

[gdal-dev] Cannot set transparent color for GeoTIFFs processed by gdal_retile

2010-02-03 Thread Ralf Wagner
sparent to avoid covering maps by these margins. I have tried all ideas I could imagine but to no avail. So my question is: how to tweak "gdal_retile" to get white color treated as transparent during merging? I am using GDAL 1.6 on Windows. Any help will be very, very appreciated - thank