[Users] No sync geopackage raster layer to QFIELD

[Matthias Kuhn]

Hi Emilio,


How did you add your raster file to the QGIS project?


In the past, I noticed some differences between drag and drop from the 
explorer to QGIS and using the browser or the add layer dialog.


Best regards

Matthias


On 1/14/20 6:23 PM, Emilio Abad Vidal wrote:
> Hi, I have a problem with exporting raster layers stored in a 
> geopackage, to a QFIELD project.
>
> I work with version 3.4.12 of QGIS and I have version 3.5.1 of QFIELD 
> Sync installed.
>
> The process I follow is as follows:
>
> 1º I convert a TIF image into a layer of a geopackage
>
> gdal_translate --config OGR_SQLITE_SYNCHRONOUS OFF -co  
> APPEND_SUBDATASET=YES -co RASTER_TABLE:foto -co TILE_FORMAT=PNG_JPEG 
> -tr 0.5 0.5 -a_srs EPSG:25829 -of GPKG foto.tif geopackage01.gpkg
>
> 2º I build the pyramids of the image
>
> gdaladdo --config OGR_SQLITE_SYNCHRONOUS OFF -r AVERAGE 
> geopackage01.gpkg:foto  2 4 8 16 32 64 128 256
>
> 3º I save the QGIS project, and activate the QFIELD Sync plug-in in 
> the project synchronization configuration options. In the layers list, 
> the one within the geopackage, has the option of *no action* and does 
> not allow it to be included in the project that will be used by QFIELD.
>
> I think the statements used to create the geopackage are correct, as 
> it does not give any error in QGIS. If I load the original layer in 
> TIF, I can synchronize it without problem. It does not happen to me 
> with a layer only, but it is with any raster that I load from geopackage.
>
> Can anyone have any idea what can happen?
>
> Thanks for the attention
>
> Emilio
>
>
>
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