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<p class="MsoNormal">Andreas,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">You’re not along with this type of problem. I’ve run into the same thing with some of the ArcTools for (Auto)Cad, where when editing an imported feature, the attributes from the DB get destroyed. Supposedly fixed in recent releases, but
our admins haven’t caught up with the new releases yet.<o:p></o:p></p>
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<p class="MsoNormal">Bobb<o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">Qgis-user <qgis-user-bounces@lists.osgeo.org> on behalf of qgis-user <qgis-user@lists.osgeo.org><br>
<b>Reply-To: </b>Andreas Neumann <a.neumann@carto.net><br>
<b>Date: </b>Friday, March 4, 2022 at 2:38 AM<br>
<b>To: </b>Simon Dietmann <simon.dietmann@pgnu.de><br>
<b>Cc: </b>qgis-user <qgis-user@lists.osgeo.org><br>
<b>Subject: </b>Re: [Qgis-user] Extending an existing line with the vertex tool - combination with tracing possible?<o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><strong><span style="font-family:"Calibri",sans-serif;color:#FF3333">Think Before You Click:
</span></strong><span style="color:black">This email originated <strong><span style="font-family:"Calibri",sans-serif">outside
</span></strong>our organization.</span><o:p></o:p></p>
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<p style="margin-left:.5in">Hi Simon and Nicolas,<o:p></o:p></p>
<p style="margin-left:.5in">Yes, that was our idea, too - to merge two or more lines that share their start/end vertices.<o:p></o:p></p>
<p style="margin-left:.5in">But unfortunately, this doesn't work for us, because we edit in a very complex data model and QGIS doesn't preserve feature Ids when merging features --> all of our DB relations would then fail.<o:p></o:p></p>
<p style="margin-left:.5in">See https://github.com/qgis/QGIS/issues/47629<o:p></o:p></p>
<p style="margin-left:.5in">I asked our commercial support provider to hopefully fix this issue ... then we could go the "merge route".<o:p></o:p></p>
<p style="margin-left:.5in">Andreas<o:p></o:p></p>
<p style="margin-left:.5in" id="reply-intro">On 2022-03-04 09:29, Simon Dietmann via Qgis-user wrote:<o:p></o:p></p>
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<p class="v1msonormal" style="margin-left:.5in"><span lang="DE">Hi Andreas,<o:p></o:p></span></p>
<p class="v1msonormal" style="margin-left:.5in"><span lang="DE"> <o:p></o:p></span></p>
<p class="v1msonormal" style="margin-left:.5in"><span lang="DE">as a workaround for your problem I would suppose you draw a new line feature using the tracing function and then merge it with the one you want to extend.<o:p></o:p></span></p>
<p class="v1msonormal" style="margin-left:.5in"><span lang="DE">That should work without any problem.<o:p></o:p></span></p>
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<p class="v1msonormal" style="margin-left:.5in"><span lang="DE" style="font-size:10.0pt;font-family:"Arial",sans-serif"><br>
<br>
Simon Dietmann<br>
</span><span lang="DE" style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#999999">M.Sc. Physische Geografie</span><span lang="DE"><o:p></o:p></span></p>
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<p class="v1msonormal" style="margin-left:.5in"><strong><span lang="DE" style="font-family:"Calibri",sans-serif"> </span></strong><span lang="DE"><o:p></o:p></span></p>
<p class="v1msonormal" style="margin-left:.5in"><strong><span lang="DE" style="font-family:"Calibri",sans-serif">Von:</span></strong><span lang="DE"> Qgis-user <qgis-user-bounces@lists.osgeo.org>
<strong><span style="font-family:"Calibri",sans-serif">Im Auftrag von </span></strong>Nicolas Cadieux via Qgis-user<br>
<strong><span style="font-family:"Calibri",sans-serif">Gesendet:</span></strong> Freitag, 4. März 2022 05:13<br>
<strong><span style="font-family:"Calibri",sans-serif">An:</span></strong> Andreas Neumann <a.neumann@carto.net><br>
<strong><span style="font-family:"Calibri",sans-serif">Cc:</span></strong> QGIS User List <qgis-user@lists.osgeo.org><br>
<strong><span style="font-family:"Calibri",sans-serif">Betreff:</span></strong> Re: [Qgis-user] Extending an existing line with the vertex tool - combination with tracing possible?<o:p></o:p></span></p>
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<p class="v1msonormal" style="margin-left:.5in"><span lang="DE"> <o:p></o:p></span></p>
<p class="v1msonormal" style="margin-left:.5in"><span lang="DE">Hi,<o:p></o:p></span></p>
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<p class="v1msonormal" style="margin-left:.5in"><span lang="DE"> <o:p></o:p></span></p>
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<p class="v1msonormal" style="margin-left:.5in"><span lang="DE">To my knowledge, when using the vertex tool, you click on the last node and then, you can extend it once. I think you need to reclick the last node again if you want to add a new point. I don't
do much vectorizing lately and in the past, used AutoCAD to do it. There must be some other way of doing it. Maybe there is a shortcut or something like the shift key we need to use. I would check the user manual to see if there is an option under the vertex
tool. I see that lots of new tools have been added lately making QGIS a good contender for tracing. I guess you could just create a new line and then merge both together.<o:p></o:p></span></p>
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<p class="v1msonormal" style="margin-left:.5in"><span lang="DE"> <o:p></o:p></span></p>
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<p class="v1msonormal" style="mso-margin-top-alt:5.0pt;margin-right:0in;margin-bottom:12.0pt;margin-left:.5in">
<span lang="DE">Just my grain of salt...<o:p></o:p></span></p>
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<p class="v1msonormal" style="margin-left:.5in"><span lang="DE">Nicolas Cadieux<o:p></o:p></span></p>
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<p class="v1msonormal" style="margin-left:.5in"><span lang="DE"><a href="https://gitlab.com/njacadieux" target="_blank">https://gitlab.com/njacadieux</a><o:p></o:p></span></p>
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<span lang="DE"><o:p> </o:p></span></p>
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<p class="v1msonormal" style="mso-margin-top-alt:5.0pt;margin-right:0in;margin-bottom:12.0pt;margin-left:.5in">
<span lang="DE">Le 1 mars 2022 à 05:24, Andreas Neumann <<a href="mailto:a.neumann@carto.net">a.neumann@carto.net</a>> a écrit :<o:p></o:p></span></p>
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<p class="v1msonormal" style="margin-left:.5in"><span lang="DE"> <o:p></o:p></span></p>
<p style="margin-left:.5in"><span lang="DE">Hi,<o:p></o:p></span></p>
<p style="margin-left:.5in"><span lang="DE">When I am extending an existing line with the vertex tool (by enabling the vertex tool and clicking on the small "plus" symbol), can I then still activate the "tracing" functionality to follow along other features?<o:p></o:p></span></p>
<p style="margin-left:.5in"><span lang="DE">If yes, I haven't found out how - any hints would be appreciated a lot!<o:p></o:p></span></p>
<p style="margin-left:.5in"><span lang="DE">Thanks,<o:p></o:p></span></p>
<p style="margin-left:.5in"><span lang="DE">Andreas<o:p></o:p></span></p>
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