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 Website: http://cvn.natuurpunt.be
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