Bug report #8056

Ring is incorrectly interpreted if MIF is used

Added by Maxim Dubinin about 7 years ago. Updated over 1 year ago.

Status:Closed
Priority:Normal
Assignee:-
Category:Vectors
Affected QGIS version:master Regression?:No
Operating System: Easy fix?:No
Pull Request or Patch supplied:No Resolution:end of life
Crashes QGIS or corrupts data:No Copied to github as #:16897

Description

QGIS should render ring as a hole in the polygon and this indeed happens with attached TAB, but not with MIF/MID.

Like this: http://gis-lab.info/images/screenshots/20130613-13f-92kb.jpg

It seems that this is not GDAL issue, but the issue is how QGIS interprets direction of nodes sequence of the ring. If outer polygon and inner are counterdirected - the ring draws, if direction is the same - it doesn't.

Sample data: http://gis-lab.info/forum/download/file.php?id=5935

History

#1 Updated by dr - over 3 years ago

I've faced with the same issue in the latest master.

#2 Updated by Giovanni Manghi over 3 years ago

  • Easy fix? set to No
  • Regression? set to No

#3 Updated by Giovanni Manghi over 1 year ago

  • Resolution set to end of life
  • Status changed from Open to Closed

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