[gdal-dev] translating palettes in geotiff - followup

[Jukka Rahkonen]

David Strip <gdal <at> stripfamily.net> writes:

> 
> In my previous email, I laid out a process that seems to work for me. 
> Now I realize that while this works for a single input file, how do I 
> generalize it to work on a set of tiles?
> At first I naively thought I could just replace the SourceFileName and 
> re-run the gdal_translate -of gtiff step, but since the location is 
> embedded in the vrt, every tile would end up in the same place.
> How do I generalize this process so I can reuse the edits to the .vrt?

Partial solution could be to use gdalbuildvrt
http://www.gdal.org/gdalbuildvrt.html
Running gdalbuildvrt alltiles.vrt *.tif will create a vrt file with one
common colortable and all tif files as separate SimpleSources. Changing them
into ComplexSources and adding LUT blocks should be doable with a clever
test editor. However, after running gdalbuildvrt you will have one dataset
instead of bunch of tiles and if you want tiles back you will need to split
the "alltiles.vrt" file somehow. If you do not need tiles you can avoid this
and convert the whole vrt file into one single geotiff.

-Jukka Rahkonen-