Bug report #12310

Inconsistent handling of 3D and 4D postgis data

Added by Sandro Santilli over 9 years ago. Updated over 5 years ago.

Category:Data Provider/PostGIS
Affected QGIS version:2.8.1 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 #:20488


4D geometries are "flattened" down to 2D (using Force2D) while 3D geometries (both 3DZ and 3DM) are kept that way.
This is inconsistent. Either we should allow 3d, thus forcing 4D to 3d (3dz or 3dm) or we should never flat and keep
all the dimensions. If we flat to 3d we should choose whether we keep Z or M and if we keep Z I guess we can then
flatten down 3dM to 2D as well...

\\cc @mhugo @jef

See also #1473

Related issues

Related to QGIS Application - Feature request #1473: 3dz/3dm/4d support Closed
Related to QGIS Application - Bug report #9032: LINESTRINGM not displayed Closed 2013-11-08


#1 Updated by Jürgen Fischer over 9 years ago

See also QEP#8

#2 Updated by Jürgen Fischer about 9 years ago

  • Category set to Data Provider/PostGIS

#3 Updated by Giovanni Manghi about 7 years ago

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

#4 Updated by Giovanni Manghi over 5 years ago

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

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