Below I describe the method I am using.

I have two machines:

  1. ubuntu linux, qgis 1.4 - intersection works
  2. WIN xp, qgis 1.8 - intersection does not work

Hopefully, someone will find what I am doing wrong I uploaded this screencast showing my problem. The error massage:

"Feature geometry error: One or more output features ignored due to invalid geometry.
Some output geometries may be missing or invalid."

I also tried some other tweaks:

  1. buffering the points layer so I will be doing polygon/polygon intersect - didn't work
  2. saving both layers while specifying the same CRS - didn't work

What am I missing here?

  • Are you really using the same datasets on ubuntu and windows? – underdark Aug 9 '12 at 6:27
  • definately, rechecked it twice. it also happens when i create new layers – yair suari Aug 9 '12 at 10:19
  • can you describe how you intersected both shapes? – PieterB Aug 9 '12 at 13:11
  • The GDAL version changed between 1.4 and 1.8. Maybe the new one has issues with the datasets. – underdark Aug 9 '12 at 16:00
  • Are you using exactly the same files? Do they have any spaces or unusual characters in the Windows directory? Try running the operation with the point and polygons in a C:\workspace\ directory or similar in the root. – Simbamangu Aug 9 '12 at 17:57

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