Bug report #14142

M ordinate is lost on shapefile update

Added by Sandro Santilli over 8 years ago. Updated over 7 years ago.

Category:Data Provider/OGR
Affected QGIS version:master Regression?:No
Operating System: Easy fix?:No
Pull Request or Patch supplied:No Resolution:up/downstream
Crashes QGIS or corrupts data:No Copied to github as #:22144


Opening an XYM or XYMZ shapefile and editing its attributes results in loosing the M ordinate value from the original shapefile.
This is an unwarned lossy operation, pretty bad for an unaware user.

This ticket is a spin-off of #11422

Either M support should be added to OGR or QGIS should print a big warning and ask if the user wants to continue with the destructive operation.


#1 Updated by Matthias Kuhn over 8 years ago

Is there already a ticket against GDAL?

#3 Updated by Even Rouault over 7 years ago

  • Resolution set to up/downstream
  • Status changed from Open to Closed

Has been fixed with GDAL 2.1

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