Bug report #22082

PostGIS closed circle in Curved Polygon is not displayed

Added by Uwe Hebel about 5 years ago. Updated about 5 years ago.

Category:Data Provider/PostGIS
Affected QGIS version:3.6.0 Regression?:Yes
Operating System:Windows10 Easy fix?:No
Pull Request or Patch supplied:No Resolution:
Crashes QGIS or corrupts data:No Copied to github as #:29895


The way to store closed Circles in PostGIS differ from circular strings. Circular strings will have three points: start, end an third point somwhere on the arc. For closed circles the PostGIS documentation says: "The exception to this is for a closed circle, where the start and end points are the same. In this case the second point MUST be the center of the arc, ie the opposite side of the circle."
In QGIS 3.6.0 closed circles will not displayed at all, when following this definition. In QGIS 2.18.2 they are displayed correctly.
When digitizing closed circles in QGIS 3.6.0 they will have 5 points on the arc. Those circles are displayed in QGIS 2.18.2 and QGIS 3.6.0.
I have tested this with Curved Polygons. However probably the same behaviour will be with Circular Strings and Compound Curves.


#1 Updated by Giovanni Manghi about 5 years ago

  • Regression? changed from No to Yes
  • Priority changed from Normal to High

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