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Benjamin,<br>
You could try Dissolve, under Geoprocessing Tools, alternatively you
could try saving the dataset locally as a shapefile, edit using
either of the methods you outlined below, In relation to saving the
edits back to the table as linestring, use the DB Manager tool,
select the table you wish to update, tick the options you want,
making sure both <b>Replace destination Table (if exists) </b>and<b>
Create single-part geometries instead of multi-part</b> This has
worked for me in the past, admittedly for polygons, but it should
also work for linestrings.<br>
<br>
Hope this helps,<br>
<br>
Richard.<br>
<br>
<div class="moz-cite-prefix">On 18/04/2017 17:24, David J. Bakeman
wrote:<br>
</div>
<blockquote cite="mid:crns6s01b8udd037@seg1.opw.ie" type="cite">
<pre wrap="">On 04/18/2017 02:17 AM, <a class="moz-txt-link-abbreviated" href="mailto:Fuenfer-Koenigstein.Benjamin@swm.de">Fuenfer-Koenigstein.Benjamin@swm.de</a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi there,
I want to merge multiple linestrings with same start/endpoint to a single linestring (all lines within one layer). As I use a PostGIS source with geometry type linestring, it is important that the new geometry is still linestring and not multilinestring type. "Merge selected features" tool and "JOIN" in QAD-Plugin both create multilinestrings. Has anyone an idea how to directly merge into linestring or how to change geometry type after merging? Thanks for your suggestions!
</pre>
</blockquote>
<pre wrap="">I'm not sure I completely understand what you want but you could run
multipart to singleparts from the Vector/Geometry Tools menu on the
multilinestring layer to generate a layer with just linestrings.
</pre>
<blockquote type="cite">
<pre wrap="">
Best regards
Benjamin
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<br>
<div class="moz-signature">-- <br>
<b><u>Richard McDonnell</u></b><br>
<b><small><small><small>GIS Specialist PgD GIS AssocSCSI</small></small></small></b><br>
<b><small>OPW FRM Data Management</small></b><br>
<b><small>52 Stephens Green, Dublin 2.</small></b><br>
<small><small>TEL: 01 6476543</small></small></div>
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