Bug report #11663

Bad polygon simplification

Added by Nyall Dawson about 10 years ago. Updated almost 6 years ago.

Status:Closed
Priority:Normal
Assignee:Alvaro Huarte
Category:Simplification
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 #:19914

Description

I've attached a small dataset and project which demonstrates incorrect polygon simplification to a bounding box.

Steps to reproduce:

- open project
- zoom in and out on features
- the polygons will incorrectly collapse to bounding boxes when zooming out

bad_simplification.zip (4.33 KB) Nyall Dawson, 2014-11-16 03:00 PM

History

#1 Updated by Alvaro Huarte about 10 years ago

Hi Nyall, I tested this project using master code in Windows 8.1 and I don't see the bounding boxes, but using the GIS 2.6 release from Windows installer I see the Bounding boxes.

#2 Updated by Paolo Cavallini about 10 years ago

  • Status changed from Open to Feedback

Could you please find the fix and backport it to 2.6 branch, in view of a possible 2.6.1 release?

#3 Updated by Giovanni Manghi over 9 years ago

  • Status changed from Feedback to Open
  • Category set to Simplification

still true on the latest master.

#4 Updated by Giovanni Manghi over 7 years ago

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

#5 Updated by Giovanni Manghi almost 6 years ago

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

Also available in: Atom PDF