Does QGIS support topological editing of shared vertices between two or more lines? When in editing mode, if I select a vertex at an intersection, it seems that sometimes it will move all lines connected to that vertex, and sometimes not.

I am using QGIS 2.6 and have Enable topological editing turned on in the Snapping options. These lines are all within the same layer.

  • Thanks, have tested later versions and don't experience the same issue. Submit that as an answer if you like. – XIY Feb 29 '16 at 1:11
  • QGIS 2.6 it is old version and may have some issues. If it's possible update QGIS version to newest. – Artec Feb 29 '16 at 6:43

This is an option (turned on or off) in QGIS. The settings for the latest QGIS 3 are described in this question/answer: How can I enable topological editing in QGIS 3

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