<div dir="ltr"><div>I know you are beyond this stage but if you check the<b> Use 0 for transparency when needed</b> box in the georeferencer settings it will not have the black box when you georeference. <br></div><div><img src="cid:ii_l3lro9g00" alt="image.png" style="margin-right: 0px;" width="164" height="96"><br><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, May 25, 2022 at 10:14 AM Nicolas Cadieux via Qgis-user <<a href="mailto:qgis-user@lists.osgeo.org">qgis-user@lists.osgeo.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p>Hi,</p>
<p><br>
</p>
<p>Another way is to add an alpha band to the image. I generally
use GIMP to do this. If the Georeferencer sees and alpha band,
then, the border will use this band.<br>
</p>
<p><br>
</p>
<p>Nicolas<br>
</p>
<div>On 2022-05-24 7:25 a.m., Richard
McDonnell via Qgis-user wrote:<br>
</div>
<blockquote type="cite">
<div>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">Easiest
way I can think of doing what you want is to create a VRT of
the three raster’s.
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">Raster</span></b><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">
</span><span style="font-size:11pt;font-family:Wingdings;color:rgb(31,73,125)">è</span><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">
<b>Miscellaneous</b> </span><span style="font-size:11pt;font-family:Wingdings;color:rgb(31,73,125)">è</span><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">
<b>Build Virtual Raster</b></span><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">When
you do this set the
<b>Nodata value</b> to 0 (the default transparent value form
the Georeference Tool)<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">This
should create a merged raster for you and allow you to use
the correct transparency value.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">Hope
this helps,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)">Richard<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:rgb(31,73,125)"><u></u> <u></u></span></p>
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<div style="border-color:rgb(225,225,225) currentcolor currentcolor;border-style:solid none none;border-width:1pt medium medium;padding:3pt 0cm 0cm">
<p class="MsoNormal"><b><span style="font-size:11pt;font-family:"Calibri",sans-serif" lang="EN-US">From:</span></b><span style="font-size:11pt;font-family:"Calibri",sans-serif" lang="EN-US"> Qgis-user
<a href="mailto:qgis-user-bounces@lists.osgeo.org" target="_blank"><qgis-user-bounces@lists.osgeo.org></a>
<b>On Behalf Of </b>Lazanu Ciprian-Catalin via
Qgis-user<br>
<b>Sent:</b> 24 May 2022 11:53<br>
<b>To:</b> Uwe Fischer via Qgis-user
<a href="mailto:qgis-user@lists.osgeo.org" target="_blank"><qgis-user@lists.osgeo.org></a>; Uwe Fischer via
Qgis-user <a href="mailto:qgis-user@lists.osgeo.org" target="_blank"><qgis-user@lists.osgeo.org></a><br>
<b>Subject:</b> [Qgis-user] Raster<u></u><u></u></span></p>
</div>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black;border:1pt none windowtext;padding:0cm;background:white none repeat scroll 0% 0%" lang="RO">Hello,</span><span style="color:black" lang="RO"> </span><span style="color:black"><u></u><u></u></span></p>
<p class="MsoNormal" style="background:white none repeat scroll 0% 0%"><span style="font-family:"Calibri",sans-serif;color:black" lang="RO">I georeferenced three maps ... all good, quite
easy by using points from map canvas. When my map was
ready it has a black border (image 1). This is solved by
~Custom transparency options~, and a black border
disappears. But this solution is just temporarily,
because if I close and reopen ... that raster has again
a black border. I want to merge the three maps in one,
but it does with a black border between maps. </span><span style="color:black"><u></u><u></u></span></p>
<p class="MsoNormal" style="background:white none repeat scroll 0% 0%"><span style="font-family:"Calibri",sans-serif;color:black" lang="RO">A solution to this annoying problem? </span><span style="color:black"><u></u><u></u></span></p>
<p style="text-align:justify;text-indent:2cm"><span style="font-family:"Calibri",sans-serif;color:black;border:1pt none windowtext;padding:0cm;background:white none repeat scroll 0% 0%">Thank
you</span><span style="font-family:"Calibri",sans-serif;color:black"> </span><span style="font-size:11pt;font-family:"Calibri",sans-serif;color:black"><u></u><u></u></span></p>
<p class="MsoNormal"><a href="https://drive.google.com/drive/folders/1qM1_TeFUng9-xyRXRQCuMrEMwxFeJV7n?usp=sharing" id="gmail-m_-2713838013748153033LPlnkOWALinkPreview" target="_blank"><span style="font-family:"Calibri",sans-serif">https://drive.google.com/drive/folders/1qM1_TeFUng9-xyRXRQCuMrEMwxFeJV7n?usp=sharing</span></a><span style="font-family:"Calibri",sans-serif;color:black"> images<u></u><u></u></span></p>
<div>
<div style="margin-top:12pt;margin-bottom:12pt;max-width:800px;min-width:424px" id="gmail-m_-2713838013748153033LPBorder_GTaHR0cHM6Ly9kcml2ZS5nb29nbGUuY29tL2RyaXZlL2ZvbGRlcnMvMXFNMV9UZUZVbmc5LXh5UlhSUUN1TXJFTXd4RmVKVjduP3VzcD1zaGFyaW5n">
<table style="width:100%;border:1pt solid rgb(200,200,200)" width="100%" cellpadding="0" border="1">
<tbody>
<tr>
<td style="width:100%;border:medium none;padding:9pt 27pt 9pt 9pt" width="100%" valign="top">
<div style="margin-right:6pt;margin-bottom:9pt" id="gmail-m_-2713838013748153033LPTitle286380">
<p class="MsoNormal"><a href="https://drive.google.com/drive/folders/1qM1_TeFUng9-xyRXRQCuMrEMwxFeJV7n?usp=sharing" target="_blank"><span>Meet
Google Drive – One place for all your
files</span></a><span><u></u><u></u></span></p>
</div>
<div style="margin-right:6pt;margin-bottom:9pt;max-height:100px;overflow:hidden" id="gmail-m_-2713838013748153033LPDescription286380">
<p class="MsoNormal"><span>Google
Drive is a free way to keep your files
backed up and easy to reach from any
phone, tablet, or computer. Start with
15GB of Google storage – free.<u></u><u></u></span></p>
</div>
<div id="gmail-m_-2713838013748153033LPMetadata286380">
<p class="MsoNormal"><span><a href="http://drive.google.com" target="_blank">drive.google.com</a><u></u><u></u></span></p>
</div>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif;color:black"><u></u> <u></u></span></p>
</div>
</div>
</div>
<br>
<fieldset></fieldset>
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</blockquote>
<pre cols="72">--
Nicolas Cadieux
<a href="https://gitlab.com/njacadieux" target="_blank">https://gitlab.com/njacadieux</a></pre>
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