<https://spatialthoughts.com/> Try gdal_calc
gdal_calc.py -A input.tif --A_band=1 -B input.tif --B_band=2 -C input.tif --C_band=3 -D input.tif --D_band=4 --outfile=reclass.tif --calc="(A==109)*(B==178)*(C==200)*(D==255) + (A==138)*(B==193)*(C==212)*(D==255) + (A==161)*(B==205)*(C==220)*(D==255)" This will set the 3 RGB values to 1 and rest all to 0. Ujaval Gandhi Spatial Thoughts <https://spatialthoughts.com/> On Fri, Dec 27, 2019 at 7:56 PM Nicolas Cadieux < [email protected]> wrote: > Hi, > Yes, google “reclassify”. You can do it multiple ways. > Nicolas > > > Le 27 déc. 2019 à 05:55, LE LAMER Romain <[email protected]> a écrit : > > > > Hi, > > Is it possible via gdal_translate, or other gdal program, to binarize a > tile? > > > > I would like the colors RGB 59,89,95,255 & 60,89,96,255 change to white > (color entry 0) and that the other colors 109,178,200,255; 138,193,212,255 > & 161,205,220,255 change to black (color entry 1) > > > > I don't understand how to use the -b and / or -mask arguments in this > code > > l = 'gdal_translate -a_srs EPSG:4326 -a_ullr ' + ullr + f_in + f_out + > '\n' > > > > Thanks > > _______________________________________________ > > Qgis-user mailing list > > [email protected] > > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > _______________________________________________ > Qgis-user mailing list > [email protected] > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
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