I am looking for a way to calculate the segment lengths of a line network. I am probably missing just the right vocabulary to search for the best approach, so I guess asking here would be a good idea. I have prepared an image of what I want to achive: Line network with segment lengths

Please note that I am not interested in the length of each line, I know how to calculate that. What I want to calculate is the length between the squares, the intersections that is. Bonus would be to have the lengths towards the end points of a line.

I imagine that pgRouting is able to do that, but I'd prefer a solution without Postgis.

Is this already built into QGIS with the Network analysis library?

I am unsure what to look for.

1 Answer 1


By processing 'Split Lines with lines, using the same layer enter image description here

  • Nice, thank, you. But that would have a completely dissolved input layer as premise wouldn't it?
    – Frank
    Jun 27, 2017 at 18:30
  • 1
    @Frank - No, not necessarily
    – pigreco
    Jun 27, 2017 at 18:38
  • 1
    I tried your approach with a "worst case scenario", OpenStreetMap highway data and it did work.
    – Frank
    Jun 29, 2017 at 7:11

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