Running QGIS 1.8.0

I have three bus compounds. I would like to generate Voronoi/Thiessen polygons around those three points. Following Voronoi/Thiessen adding an all school points will allow us to determine which school should be served by which bus compound.

Creating Voronoi: enter image description here

It works very quickly and results in: enter image description here

Obviously not what I expected. Can anyone shed some insight?


  • 1
    You have too few points. I tested it with only 3 points and got similar result. Seems that this tool doesn't work correctly with such small amount of points. Maybe you should report it as a bug. – SS_Rebelious Jul 24 '13 at 21:35
  • 1
    there is also a bug in the algorithm when using an extent beyond the bounding rectangle of the input points. gis.stackexchange.com/questions/11866/… An ArcMap version corrects this if you have access to it, I can send the link. – user681 Jul 24 '13 at 21:39

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