Bug report #20022

Polygon style: Simple line with offset

Added by Amanda Zwicky almost 2 years ago. Updated over 1 year ago.

Status:Open
Priority:Normal
Assignee:-
Category:Symbology
Affected QGIS version:3.2.2 Regression?:No
Operating System:Windows Easy fix?:No
Pull Request or Patch supplied:No Resolution:
Crashes QGIS or corrupts data:No Copied to github as #:27844

Description

When using the 'Layer Properties - Symbology - Fill - Simple line' with a offset value (positive or negative), the line is sometimes not drawn in the map window. It seems to depend on the shape of the polygon, the zoom level and the current map extend. When I zomm or pan in the map, the lines suddenly disapears or appears. The error can be reproduced using the same data, map extend and zoom level. When using the same data, map extend and zoom level in the map composer, the line is missing as well. The problem does not always appear on the same zoom level or map extend. It behaves different when using an other data set. I have observed the problem in QGIS Version 2.18 and 3.2.2.

error_view_style_offset1.PNG - correct style with style manager settings (1.06 MB) Amanda Zwicky, 2018-10-05 08:44 AM

error_view_style_offset2.PNG - disappeared blue line (1.54 MB) Amanda Zwicky, 2018-10-05 08:44 AM

Data_example.zip (59.8 KB) Amanda Zwicky, 2018-12-13 08:10 AM

History

#1 Updated by Nyall Dawson almost 2 years ago

  • Status changed from Open to Feedback

Can you share a sample project/data which demonstrates this issue?

#2 Updated by Amanda Zwicky almost 2 years ago

Here I have some sample data. Some polygons and a layer style file. In the meantime I found out, that a polygon is not drawn in the map if the outlines gets close together.

#3 Updated by Giovanni Manghi over 1 year ago

  • Status changed from Feedback to Open

#4 Updated by Giovanni Manghi over 1 year ago

  • Subject changed from Polygon stye: Simple line with offset to Polygon style: Simple line with offset

Also available in: Atom PDF