Thanks! Could you please explain the meaning of INTERNAL_MASK_FLAGS_1=2? I couldn't find it in the documentation.
On Thu, Apr 23, 2020, 12:44 AM Even Rouault <[email protected]> wrote: > > But if I do: > > > > > > gdal_translate rgbmask.vrt rgb_with_external_msk.vrt -mask none -b 1 -b > > > 2 -b 3 -of VRT > > > > I guess in the above you meant without "-mask none", so > > > > "gdal_translate rgbmask.vrt rgb_with_external_msk.vrt -b 1 -b 2 -b 3 -of > VRT" > > > > Well, that's a consequence of the behaviour of the 'auto' mode of -mask in > > https://gdal.org/programs/gdal_translate.html#cmdoption-gdal-translate-mask > > This is admitedly not super intuitive as the example I gave before lacked > the "-mask none" when generating rgb_with_external_msk.vrt > > > > As you copy all non-mask input band, and mask is in auto mode, and thus > copied too, this is equivalent to > > > > gdal_translate rgbmask.vrt rgb_with_external_msk.vrt -of VRT > > > > and the VRT driver is then smart enough to detect that its source is a > VRT, so it is an equivalent of a single "cp" of the original VRT. > > > > > > > > -- > > Spatialys - Geospatial professional services > > http://www.spatialys.com >
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