Hello, > I created a "single raste_table" GPKG image, based on a VRT image : > > > It does work. However, the output image is HUGE: all the empty tiles within > [-179.0° ; +179.0°] are created. > * Is there a way to tell gdal_translate not to create those useless tiles ? > * does GPKG format supports "missing tiles" in such case ?
If the input image for the GPKG driver is RGBA, and the alpha channel is at constant at 0 for a tile, then the tile is omitted. > > 2nd test: > > I created a two-step GPKG, using the "APPEND_SUBDATASET": > > > This GPKG is fine. However, it may be difficult to deal with 2 sub-datasets > in our use-cases. > * Would it be possible to update an already existing subdataset ? You can also just do: gdalwarp MyImageEast.tif MyImageWest.tif out.gpkg Even -- Spatialys - Geospatial professional services http://www.spatialys.com _______________________________________________ gdal-dev mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/gdal-dev
