Feature request #20375

GDA94>GDA2020 OTF Transformation

Added by Tyson Hillyard about 1 year ago. Updated 11 months ago.

Status:In Progress
Priority:Normal
Assignee:Nyall Dawson
Category:Projection Support
Pull Request or Patch supplied:No Resolution:
Easy fix?:Yes Copied to github as #:28195

Description

Can't seem to find a way to implement GDA94>GDA2020 OTF Transformation.
QGIS has support for GDA2020 now.

There are 3 options in EPSG now for this transformation and PROJ seems to support the methods, but i can't find a way to use them in QGIS.
The three EPSG codes for transformation for onshore Australia are:
8048 (Helmert Transformation)
8446 (Conformal Grid Transformation with associated GSB)
8447 (Conformal + Distrortion Grid transformation with associated GSB)

History

#1 Updated by Tyson Hillyard about 1 year ago

I should also have said that i have tried to choose the default transformation through the options dialogue, but when selecting 4283 and 7844 there are no options shown in the source and destinations transformation box.

I have also installed the GSB files using the OSGEO4W download tool choosing the proj-datumgrid-oceania option in the setup tool

#2 Updated by Nyall Dawson 11 months ago

  • Assignee set to Nyall Dawson
  • Status changed from Open to In Progress

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