Am 14.06.2013 00:55, schrieb Phil Scadden:
Okay, but how is the best way to fix it? Since pnqnq runs on individual
tiles, I would not expect tiles to have the same palette.
What is needed is to read the nq tiles into memory, convert to RGBA
raster, then put that into overview tile. How tricky is this to do? Any
pointers into the API that would help me.
I ran into the same problem when tiling paletted dutch top map tif files.
I created vrts with RGBA with the following command (on Windows):
for %%N in (D:\Karten\gdal\gdal2tiles\NL25\*.tif) DO gdal_translate -of
vrt -expand rgba %%N D:\Karten\gdal\gdal2tiles\NL25\%%~nN.vrt
and then build an index and ran gdal2tiles on the index vrt:
gdalbuildvrt -allow_projection_difference index25.vrt NL25\*.vrt
gdal2tiles --s_srs EPSG:28992 --zoom 15-16 index25.vrt tiles
HTH,
André Joost
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