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 <njacadieux.git...@gmail.com>
*Inviato:* martedì 1 dicembre 2020 17:40
*A:* Alberto Vavassori <alberto.vavass...@polimi.it>
*Cc:* qgis-user@lists.osgeo.org
*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
<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 <https://gitlab.com/njacadieux>
Le 1 déc. 2020 à 09:58, Alberto Vavassori
<alberto.vavass...@polimi.it>
<mailto:alberto.vavass...@polimi.it> 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
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Nicolas Cadieux
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https://gitlab.com/njacadieux
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