This looks like the same issue you are having. github.com/qgis/QGIS/issues/38227 According to the documentation linked in the issue you need to set the band count to 1 otherwise it defaults to 4. gdal.org/drivers/raster/gpkg.html I have not tried this to see if it works.
On Tue, Dec 1, 2020 at 11:52 AM Nicolas Cadieux <[email protected]> wrote: > Hi, > > Looking at it now. I see what you see. I will try a few things. > > Nicolas > On 2020-12-01 11:42 a.m., Alberto Vavassori wrote: > > Hi Nicolas, > > thank you for the answer. I send the raster that I am interested in. > > Alberto > > > > *Da:* Nicolas Cadieux <[email protected]> > <[email protected]> > *Inviato:* martedì 1 dicembre 2020 17:40 > *A:* Alberto Vavassori <[email protected]> > <[email protected]> > *Cc:* [email protected] > *Oggetto:* Re: [Qgis-user] Importing a raster into a Geopackage > > > > Hi, > > Send a sample data set if you can't figure it out. > > Nicolas > > On 2020-12-01 10:35 a.m., Nicolas Cadieux wrote: > > Hi, > > Perhaps this can help: https://gdal.orgdrivers/raster/gpkg.html > > > > “Various kind of input datasets can be converted to GeoPackage raster : > > · Single band grey level > > · Single band with R,G,B or R,G,B,A color table > > · Two bands: first band with grey level, second band with alpha > channel > > · Three bands: Red, Green, Blue > > · Four band: Red, Green, Blue, Alpha > > GeoPackage rasters only support Byte data type.” > > My guess is that if the original raster does not correspond to one of the > categories above, it will be converted to the closest format. > > > > Nicolas Cadieux > > https://gitlab.com/njacadieux > > > > Le 1 déc. 2020 à 09:58, Alberto Vavassori <[email protected]> > <[email protected]> a écrit : > > > > Hello everybody. I have an issue regarding the Geopackage format. I have > tried to import a singleband raster file (it represents the land cover, > thus every pixel has a single integer value corresponding to the land cover > class), but this operation seems to modify the raster characteristics: the > raster becomes a 4-bands raster and the pixels values change accordingly > (basically, the original raster is saved in the Geopackage as an RGB > image). It seems to be a bug of QGIS. I have also tried to use GDAL > translate through the processing toolbox of QGIS to convert the TIFF file > to a Geopackage file, but the result is the same. > > Has anybody faced this problem? May anybody suggest a way to work this > problem out? > > Thank you. > > Alberto > > _______________________________________________ > 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 > > -- > > Nicolas Cadieux > > https://gitlab.com/njacadieux > > -- > Nicolas Cadieuxhttps://gitlab.com/njacadieux > > _______________________________________________ > 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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