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<p>Hi,<br>
</p>
<p>Send a sample data set if you can't figure it out.</p>
<p>Nicolas<br>
</p>
<div class="moz-cite-prefix">On 2020-12-01 10:35 a.m., Nicolas
Cadieux wrote:<br>
</div>
<blockquote type="cite"
cite="mid:38B34958-D7D0-41DC-8BEB-9A4F6A1999AE@gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
Hi,
<div>Perhaps this can help: <a
href="https://gdal.orgdrivers/raster/gpkg.html"
moz-do-not-send="true">https://gdal.orgdrivers/raster/gpkg.html</a></div>
<div><br>
</div>
<div>
<p style="font-size: 16px; box-sizing: border-box; line-height:
24px; margin: 0px 0px 24px; caret-color: rgb(64, 64, 64);
color: rgb(64, 64, 64); font-family: Lato, proxima-nova,
"Helvetica Neue", Arial, sans-serif;
-webkit-text-size-adjust: 100%;">“Various kind of input
datasets can be converted to GeoPackage raster :</p>
<ul class="simple" style="font-size: 16px; box-sizing:
border-box; margin: 0px 0px 24px; padding: 0px;
list-style-position: initial; list-style-image: initial;
line-height: 24px; caret-color: rgb(64, 64, 64); color:
rgb(64, 64, 64); font-family: Lato, proxima-nova,
"Helvetica Neue", Arial, sans-serif;
-webkit-text-size-adjust: 100%;">
<li style="box-sizing: border-box; list-style: disc;
margin-left: 24px;">
<p style="box-sizing: border-box; line-height: 24px; margin:
0px;">Single band grey level</p>
</li>
<li style="box-sizing: border-box; list-style: disc;
margin-left: 24px;">
<p style="box-sizing: border-box; line-height: 24px; margin:
0px;">Single band with R,G,B or R,G,B,A color table</p>
</li>
<li style="box-sizing: border-box; list-style: disc;
margin-left: 24px;">
<p style="box-sizing: border-box; line-height: 24px; margin:
0px;">Two bands: first band with grey level, second band
with alpha channel</p>
</li>
<li style="box-sizing: border-box; list-style: disc;
margin-left: 24px;">
<p style="box-sizing: border-box; line-height: 24px; margin:
0px;">Three bands: Red, Green, Blue</p>
</li>
<li style="box-sizing: border-box; list-style: disc;
margin-left: 24px;">
<p style="box-sizing: border-box; line-height: 24px; margin:
0px;">Four band: Red, Green, Blue, Alpha</p>
</li>
</ul>
<p style="font-size: 16px; box-sizing: border-box; line-height:
24px; margin: 0px 0px 24px; caret-color: rgb(64, 64, 64);
color: rgb(64, 64, 64); font-family: Lato, proxima-nova,
"Helvetica Neue", Arial, sans-serif;
-webkit-text-size-adjust: 100%;">GeoPackage rasters only
support Byte data type.”</p>
<p style="font-size: 16px; box-sizing: border-box; line-height:
24px; margin: 0px 0px 24px; caret-color: rgb(64, 64, 64);
color: rgb(64, 64, 64); font-family: Lato, proxima-nova,
"Helvetica Neue", Arial, sans-serif;
-webkit-text-size-adjust: 100%;">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. </p>
</div>
<div><br>
<div dir="ltr">Nicolas Cadieux
<div><a href="https://gitlab.com/njacadieux"
moz-do-not-send="true">https://gitlab.com/njacadieux</a></div>
</div>
<div dir="ltr"><br>
<blockquote type="cite">Le 1 déc. 2020 à 09:58, Alberto
Vavassori <a class="moz-txt-link-rfc2396E" href="mailto:alberto.vavassori@polimi.it"><alberto.vavassori@polimi.it></a> a écrit :<br>
<br>
</blockquote>
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<p class="MsoNormal"><span style="font-size:12.0pt"
lang="EN-US">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.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"
lang="EN-US">Has anybody faced this problem? May
anybody suggest a way to work this problem out?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"
lang="EN-US">Thank you.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"
lang="EN-US">Alberto<o:p></o:p></span></p>
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<pre class="moz-signature" cols="72">--
Nicolas Cadieux
<a class="moz-txt-link-freetext" href="https://gitlab.com/njacadieux">https://gitlab.com/njacadieux</a></pre>
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