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I have a shapefile showing New Zealand's road network, and I need to break up roads at their intersections for my analysis but I haven't been able to do so.

So far I've tried Vector>Analysis Tools>Line intersections to create points at the intersections, and then SAGA>split lines at points, but QGIS kept crashing when it was attempting the second half. I've also tried SAGA >split lines with lines, but this also crashed QGIS.

The result I'm hoping for is to be able to export a shapefile with the existing road network, with the network divded into individual strings at their intersections.

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  • Welcome to Geographic Information Systems! Welcome to GIS SE! We're a little different from other sites; this isn't a discussion forum but a Q&A site. Your questions should as much as possible describe not just what you want to do, but precisely what you have tried and where you are stuck trying that. Please check out our short tour for more about how the site works
    – Ian Turton
    Jul 21, 2022 at 7:17
  • Please provide more details, e.g. what you tried so far, what your result should look like, and an example of the level of detail as a screenshot.
    – Erik
    Jul 21, 2022 at 8:12
  • @IanTurton Thanks for the welcome! So far I've tried Vector>Analysis Tools>Line intersections to create points at the intersections, and then SAGA>split lines at points, but QGIS kept crashing when it was attempting the second half. I've also tried SAGA >split lines with lines, but this also crashed QGIS.
    – user209057
    Jul 22, 2022 at 8:30
  • @Erik, so far I've tried Vector>Analysis Tools>Line intersections to create points at the intersections, and then SAGA>split lines at points, but QGIS kept crashing when it was attempting the second half. I've also tried SAGA >split lines with lines, but this also crashed QGIS. The result I'm hoping for is to be able to export a shapefile with the existing road network, with the network divded into individual strings at their intersections. I'm sorry, I'm not sure how to add screenshots in here
    – user209057
    Jul 22, 2022 at 8:42
  • please use the edit button to add these details to your question
    – Ian Turton
    Jul 22, 2022 at 8:55

1 Answer 1

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You can use processing algorythm native:splitwithlines

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