I am trying to simplify a polygon layer of parliamentary constituencies in Kenya using SimplyPy in QGIS and appear to be getting an erroneous result.
The method is working for most of the polygons but there are 10 or so which are disappearing in the final result. Interestingly, the polygons which are disappearing all have similar object IDs (from 280-290 - there are 290 altogether) and so it could be due to SimpliPy having a limit of only 280 polygons at once... (I hope not!). Before and after below:
I have included a link to my shapefile here.
My question is: Why are my polygons disappearing in the final output?