Hi Jens, I guess there is more than one way to combine your lines into a single object – you could end up with a multipart object (multilinestring) or a single polyline.
Have you tried the Dissolve command? I quick test for me produced a single polyline with no duplicate points from two separate lines. Cheers, Martin. From: Qgis-user [mailto:[email protected]] On Behalf Of Jens Verwaerde | Natuurpunt CVN Sent: Tuesday, 13 June 2017 11:49 PM To: [email protected] Subject: [Qgis-user] Joining polylines with overlapping points to 1 polyline with merged points I have a walking route, that I've digitized in 18 polylines, of which the endpoint is the exact same location as the beginning point of the next polyline. When I merge these 18 polylines, the overlapping points stay, unfortunately, overlapping points. Visually there's no problem: they behave as 1 polyline, but ... this causes all sorts of problems: -- exporting to gpx gives faulty routes -- combining these polylines to a polygon gives polygon rubbish -- double (or even more) points stay, although I want them to be joined to one point -- tracing always stops when I reach the end or beginning of a polyline part How can this be solved? The only thing that actually worked for me is to make a new layer/shapefile ("traced.shp") and then manually trace the polylines (using the autotrace). In Mapinfo this operation is way much more efficient. So I'm looking for a way to make 1 polyline with non-overlapping points out of a series of polylines in Qgis. Jens Verwaerde [http://www.natuurpunt.be/sites/default/files/images/inline/logohandtekening.png] Website: http://cvn.natuurpunt.be This email is intended for the named recipient only. The information it contains may be confidential. If you are not the intended recipient you must not reproduce or distribute any part of this email, disclose its contents to any other party or take any action in reliance on it. If you have received this email in error, please contact the sender immediately and delete the message.
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