Bug report #20587

Decoration -> Scale Bar uses a misleading planimetric measurement

Added by Max Muh almost 2 years ago. Updated almost 2 years ago.

Status:Open
Priority:Normal
Assignee:-
Category:Decorations
Affected QGIS version:3.5(master) Regression?:No
Operating System: Easy fix?:No
Pull Request or Patch supplied:No Resolution:
Crashes QGIS or corrupts data:No Copied to github as #:28407

Description

The map scale is shown wrongly - 20m instead of 12,4m.

qgis fehler.png (31.2 KB) Max Muh, 2018-11-22 08:19 AM

History

#1 Updated by Jürgen Fischer almost 2 years ago

  • Subject changed from Maßstab wird falsch angezeigt to map scale not shown correctly

#2 Updated by Jürgen Fischer almost 2 years ago

  • Description updated (diff)

#3 Updated by Jürgen Fischer almost 2 years ago

  • Description updated (diff)

#4 Updated by Jürgen Fischer almost 2 years ago

  • Description updated (diff)

#5 Updated by Borys Jurgiel almost 2 years ago

  • Subject changed from map scale not shown correctly to Decoration -> Scale Bar uses a misleading planimetric measurement

Currently, the scale bar always show planimetric distance. Especially when working in EPSG:4326 and the scale bar is displayed in metres (see also #14185), users may assume the measurement is ellipsoidal, what is not true.

#6 Updated by Borys Jurgiel almost 2 years ago

  • Affected QGIS version changed from 3.4.0 to 3.5(master)
  • Priority changed from Low to Normal

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