I have street data where roads are segmented for no particular reason. I want to merge, dissolve or union whatever seems fit to make a single flat line. I H have tried above processes in QGIS but every time I start edit in QGIS and start deleting the vertexes of that line the vertex jumps around as if that line is still segmented. I have attached one image where you can see how a dissolved line when edited its vertex are not deleted in straight path rather its jumps around.

So the questions is how can I make a single, straight, flat line out of segmented based on road names.

enter image description here

  • Possibly the combined lines are actually multilinestring objects, where each segment is a separate part of a multipart line. You can find out if that's the case by running multipart to singlepart. Once you know that, then we can work on a solution. I think the merge lines tool would work for that. – csk Jun 7 '19 at 18:44
  • Yes the merge file tool does the trick but to make it work i have to select the road segments manually. That will be hectic task for 1K+ roads. In my earlier experience with ArcGIS i have seen there is an option while using dissolve that we can tick an option to unsplit the final merged lines to make a single line. But there is no such option or work around in Qgis. – Abdul Rauf Jun 9 '19 at 6:29
  • Also multi part to single part does splits the line again. so that confirms even after dissolve like is still multipart. – Abdul Rauf Jun 9 '19 at 6:29

Select your road segments (by hand or by query) and try "merge selected features" (of the advanced digitizing toolbar) ? But i don't see why you would have to play with individual vertices ...

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  • Merging 1K+ roads manually is hectic, that's the reason looking for a help. Its rather an itch than a need. I know everything can be done on the dissolved line. But...…. – Abdul Rauf Jun 9 '19 at 6:32
  • Hard to diagnose if you don't provide even a subset of your data ... – snaileater Jun 9 '19 at 7:27

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