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<p>While I agree that Shapefiles are often not ideal, GeoPackage or
any other fancy modern format would have the same issues. They
have implicite topology (the spatial relationships of the
geometries defines what is connected and what is not), not
explicite topology.</p>
<p>
</p>
<p>You should find tools to do this fairly easily but if your data
is not have "perfect" "geometric topology" it might have some
false negatives or positives. Going via GRASS tools might be the
best approach. Or some routing tools that are based on those
common kinds of data.</p>
<p>Cheers, Hannes<br>
</p>
<div class="moz-cite-prefix">Am 02.05.22 um 11:07 schrieb Zoltan via
Qgis-user:<br>
</div>
<blockquote type="cite"
cite="mid:8dd095da-9275-edab-abae-b592847983b0@geograph.co.za">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
that's why SHP files need to die: They're too simple to use, so
also get used by people less "in the know"<br>
<br>
<div class="moz-cite-prefix">On 2022-05-02 11:05, Roland
Spielhofer wrote:<br>
</div>
<blockquote type="cite"
cite="mid:trinity-a58b16b8-2d3c-4979-bad0-0727a64a1629-1651482327877@3c-app-gmx-bap40">
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charset=UTF-8">
<div style="font-family: Verdana;font-size: 12.0px;">
<div> </div>
<div>
<div>I totally agree with you, but the shape is all I got
from the client - nothing better is available at his
side...</div>
<div> </div>
<div>
<div name="quote" style="margin:10px 5px 5px 10px;
padding: 10px 0 10px 10px; border-left:2px solid
#C3D9E5; word-wrap: break-word; -webkit-nbsp-mode:
space; -webkit-line-break: after-white-space;">
<div style="margin:0 0 10px 0;"><b>Gesendet:</b> Montag,
02. Mai 2022 um 10:49 Uhr<br>
<b>Von:</b> "Zoltan via Qgis-user" <a
class="moz-txt-link-rfc2396E"
href="mailto:qgis-user@lists.osgeo.org"
moz-do-not-send="true"><qgis-user@lists.osgeo.org></a><br>
<b>An:</b> <a class="moz-txt-link-abbreviated
moz-txt-link-freetext"
href="mailto:qgis-user@lists.osgeo.org"
moz-do-not-send="true">qgis-user@lists.osgeo.org</a><br>
<b>Betreff:</b> Re: [Qgis-user] Classify road network
into dead-end links and links connected on both ends</div>
<div name="quoted-content">Sigh, this is where SHP-file
hell comes in - it's the scourge of GIS.<br>
Wouldn't it have been nice if your road network was in
a data structure that allows you to go to each point
and ask it "how many lines emanate from me"?<br>
<br>
Sorry, I know this is not helpful to you, but the SHP
file format needed to have died 20 years ago.<br>
<br>
Regards,<br>
Zoltan<br>
<div class="moz-cite-prefix">On 2022-05-02 10:35,
Roland Spielhofer via Qgis-user wrote:</div>
<blockquote>
<div style="font-family: Verdana;font-size: 12.0px;">
<div>Hi,</div>
<div>I have a road network (Shape linestring)
where I would like to classify all links that
are dead-end and compute the share of the
dead-end links in relation to the total network
length.</div>
<div>I am pretty sure this is possible in QGIS or
a plugin - any pointers would be appreciated.</div>
<div> </div>
<div>Regards,</div>
<div>Roland</div>
</div>
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GIS and Photogrammetric Services
Cape Town, South Africa.
Mobile: +27-83-6004028 (Signal, not WhatsApp)
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