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Here I have two lines in QGIS. There is a part when they overlap. I want to merge them so it will be one line in the middle.

enter image description here I have tried the solutions already mentioned previously but no success. What I tried:

This is what I want to get:

enter image description here

How do I merge them?

  • What happens when you use v.clean with snap? – Erik Nov 26 '19 at 11:51
  • @Erik , when I use v.clean with snap I produces a lot of noise.... This is what I get imgur.com/a/GvXzBzr – Ad Blu Nov 26 '19 at 11:57
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    For the overlap part you could try one of my two solutions: gis.stackexchange.com/questions/123731/… – Stefan Nov 26 '19 at 12:32
  • Your desired tool is available in QGIS 3 as "Snap geometries to layer" in Processing Tool Box. Please, see my answer. – xunilk Nov 26 '19 at 16:28
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Your tool is "Snap geometries to layer" (only in QGIS 3) from Processing Tool Box.

For testing purpose, I created two lines similar to your layers; as it can be observed in following image (scale 1:1000):

enter image description here

Afterward, I launch that tool with parameters of following image (for my scale, adequate tolerance is 8 m):

enter image description here

After running it, I got:

enter image description here

whose result was merged as expected (line 1 was unchecked in Map Legend for better visualization).

| improve this answer | |
  • the problem I have is that: imgur.com/a/qFqBYMT I want to perform that operation on one layer generalized [17], which have 17 features/lines. When I do that, Im getting the red trail. – Ad Blu Nov 26 '19 at 16:33

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