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<p>Hi Emilio,</p>
<p><br>
</p>
<p>How did you add your raster file to the QGIS project?</p>
<p><br>
</p>
<p>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.</p>
<p><br>
</p>
<p>Best regards</p>
<p>Matthias<br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 1/14/20 6:23 PM, Emilio Abad Vidal
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:1118933657.641676.1579022595579.JavaMail.root@mail.cesga.es">
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<div style="font-family: times new roman,new york,times,serif;
font-size: 12pt; color: #000000">
<div style=""><font face="times new roman, new york, times,
serif">Hi, I have a problem with exporting raster layers
stored in a geopackage, to a QFIELD project.</font></div>
<div style=""><font face="times new roman, new york, times,
serif"><br>
</font></div>
<div style=""><font face="times new roman, new york, times,
serif">I work with version 3.4.12 of QGIS and I have version
3.5.1 of QFIELD Sync installed.</font></div>
<div style=""><font face="times new roman, new york, times,
serif"><br>
</font></div>
<div style=""><font face="times new roman, new york, times,
serif">The process I follow is as follows:</font></div>
<div style=""><font face="times new roman, new york, times,
serif"><br>
</font></div>
<div style=""><font face="times new roman, new york, times,
serif">1º I convert a TIF image into a layer of a geopackage</font></div>
<div style=""><font face="times new roman, new york, times,
serif"><br>
</font></div>
<div style=""><font face="times new roman, new york, times,
serif">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</font></div>
<div style=""><font face="times new roman, new york, times,
serif"><br>
</font></div>
<div style=""><font face="times new roman, new york, times,
serif">2º I build the pyramids of the image</font></div>
<div style=""><font face="times new roman, new york, times,
serif"><br>
</font></div>
<div style=""><font face="times new roman, new york, times,
serif">gdaladdo --config OGR_SQLITE_SYNCHRONOUS OFF -r
AVERAGE geopackage01.gpkg:foto 2 4 8 16 32 64 128 256</font></div>
<div style=""><font face="times new roman, new york, times,
serif"><br>
</font></div>
<div style=""><font face="times new roman, new york, times,
serif">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 <b>no action</b> and does not allow it to
be included in the project that will be used by QFIELD.</font></div>
<div><font face="times new roman, new york, times, serif"><br>
</font></div>
<div><font face="times new roman, new york, times, serif">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.</font></div>
<div><font face="times new roman, new york, times, serif"><br>
</font></div>
<div><font face="times new roman, new york, times, serif">Can
anyone have any idea what can happen?</font></div>
<div><font face="times new roman, new york, times, serif"><br>
</font></div>
<div><font face="times new roman, new york, times, serif">Thanks
for the attention</font></div>
<div><font face="times new roman, new york, times, serif"><br>
</font></div>
<div><font face="times new roman, new york, times, serif">Emilio</font></div>
<div style=""><font face="times new roman, new york, times,
serif"><br>
</font></div>
<div style=""><font face="times new roman, new york, times,
serif"><br>
</font></div>
</div>
<br>
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