Bug report #14594

Symbology: Maker Line errors when pen width less 0.265 mm

Added by Andrea Lai about 4 years ago. Updated about 1 year ago.

Status:Closed
Priority:Normal
Assignee:-
Category:Symbology
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 #:22562

Description

I have created a github repository at https://github.com/laingit/qgis-alai-bug with very simple case to reproduce the error;
there is also a readme with images showing the error.

I think the problem is related to: mm to pixel conversion (0.264583333).

The triangle should be in the middle of the dashed line.

When pen width is 0.3 mm (OK).
When pen width is less than 0.265 mm (es. 0.2 mm; create problems).

Example.PNG - shows the ERROR (red line) - (black OK) (28 KB) Andrea Lai, 2016-03-31 02:18 AM

ok.PNG - pen width 0.3 mm (ok) (14 KB) Andrea Lai, 2016-03-31 02:18 AM

ERROR.PNG - pen width 0.26 mm (make the error happen) (13.7 KB) Andrea Lai, 2016-03-31 02:18 AM

History

#1 Updated by Andrea Lai about 4 years ago

#2 Updated by Andrea Lai about 4 years ago

OK BLACK LINE

ERROR RED LINE

#3 Updated by Giovanni Manghi about 4 years ago

  • Affected QGIS version changed from 2.8.7 to master
  • Tag changed from SYMBOLOGY to symbology
  • OS version deleted (8.1)
  • Operating System deleted (windows)

#4 Updated by Giovanni Manghi about 3 years ago

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

#5 Updated by Giovanni Manghi about 1 year ago

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

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