Bug report #3071

fTools: Incomplete & Inconsistent Union Result

Added by mabab - almost 14 years ago. Updated over 13 years ago.

Assignee:cfarmer -
Category:Python plugins
Affected QGIS version: Regression?:No
Operating System:Windows Easy fix?:No
Pull Request or Patch supplied: Resolution:fixed
Crashes QGIS or corrupts data: Copied to github as #:13131


I run union function in fTools. The result of the process were incomplete as some of the polygons were missing. Here attached the summary of the process and result.

GeoUn-err.pdf (93.6 KB) mabab -, 2010-09-30 09:25 PM

qgisdata.zip - Files provided by original poster for testing (contains invalid geometry) (3.69 KB) cfarmer -, 2010-11-08 03:21 PM


#1 Updated by cfarmer - over 13 years ago

  • Resolution set to fixed
  • Status changed from Open to Closed

Fixed in revision faa3eb83 (SVN r14538). Note that the files uploaded here (provided by the original poster contain a layer (Luse) with one feature with invalid/problem-causing geometry. This will cause errors in the union no matter what, but the changes provided with faa3eb83 (SVN r14538) should address other issues, and should return more gracefully when invalid geometries are encountered.

Please test and re-open if required.


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