On mardi 7 février 2017 17:42:30 CET Renato Souza Sanabria wrote: > Hi, > > I have two similar (but with different resolutions) .tif's that I'm trying > to convert to .mbtiles with gdal_translate. They both have 4 bands (RGBA), > but only one of them is converted correctly (all four bands). In the case > of the other one, the Alpha band is not converted and is removed in the > final file.
Guessing the number of bands in a MBTiles file is a guess, so sometimes it doesn't work out of the box. Or it might be possible that the alpha channel of your dataset is always at 255. You can try the BAND_COUNT open option: http://gdal.org/frmt_mbtiles.html *BAND_COUNT*=AUTO/1/2/3/4: Number of bands of the dataset exposed after opening. Some conversions will be done when possible and implemented, but this might fail in some cases, depending on the BAND_COUNT value and the number of bands of the tile. Defaults to AUTO. gdalinfo -oo BAND_COUNT=4 foo.mbtiles Even -- Spatialys - Geospatial professional services http://www.spatialys.com
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