I'm having issues digitising in QGIS 2.18.20 on my mac. My normal strategy for digitising a habitat survey area is to create a (shapefile) polygon for my survey boundary, and split the shape repeatedly. But at present no matter how simple the shape I can't seem to split it more than once due to self-intersecting geometry errors. What am I doing wrong?


1 Answer 1


I think it might be because you are using the split parts tool instead of the split features tool. Below you'll see the button I mean.

Advanced digitizing toolbar

  • Thanks for your answer.. I tried that but I get the same behaviour with both tools.
    – Cameron
    Commented Jun 14, 2018 at 9:08

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