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Questions tagged [gda2020]

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QGIS Australia GDA94 to 2020 Transformation File (NTv2_3>

I'm looking to convert some Australian GIS data from GDA 94 to 2020. The reprojection exists, but I need to use a particular transformation - specially NT v2_3 Conformal (this exists in ESRI). I ...
Amit's user avatar
  • 11
3 votes
1 answer
166 views

Enabling GDA2020 in Global Mapper

Enabling Australia's GDA2020 datum in Global Mapper has been discussed in a Global Mapper Forum thread titled Australian GDA2020 implementation issue. That discussion seems to say that GDA2020 can be ...
PolyGeo's user avatar
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0 votes
2 answers
513 views

In FME, I want to copy a .tab file, place it in a new folder called 'GDA94 Archive' and rename the file with a prefix 'GDA94_'

I am very new to FME. As part of my GDA2020 process, I would like to copy a .tab file from its current location, add a prefix to it called 'GDA94_' and then place it into a new folder in the same ...
Firnsy's user avatar
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1 vote
2 answers
92 views

GDAL Script Failing since GDA2020 Shift - unable to find EPSG 7855

I have a series of ogr2ogr scripts that run daily on our Intramaps server. Since shifting our GIS data to GDA2020 I notice these scripts fail with ERROR 6: EPSG PCS/GCS code 7855 not found in EPSG ...
Josh's user avatar
  • 333
1 vote
0 answers
84 views

Handling Self Intersecting SQL Geometries with OGR

Is there a way to validate/fix self intersecting SQL geometries when pushing a SQL table into a new SQL database using OGR? This is MSSQL. I want to avoid having to manually fix potentially many badly ...
Josh's user avatar
  • 333
0 votes
0 answers
196 views

Map not showing up when set to GDA2020

When I open the quickmapservices/OSM (or Google) map it opens up on a EPSG:4326 (default), but since I am in Australia I need to use the GDA2020 projection. When I try to change the CRS to GDA2020, ...
Anna Williams's user avatar
0 votes
1 answer
363 views

No coordinate change when reprojecting GDA2020 to GDA94?

I'm trying to use QGIS to reproject GDA2020 UTM55 coords to GDA94 UTM55 (they were recorded GDA2020 because 2022 but now we need to put them into older software). I load the CSV into QGIS and run the ...
GlenS's user avatar
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0 votes
1 answer
1k views

Converting latitude/longitude to UTM using GDA2020 datum with Pyproj

I want to convert a pair of (latitude, longitude) values that represent a location in Australia to UTM values within the GDA2020 datum. I tried to do something similar to what I usually do with North ...
Eskapp's user avatar
  • 322
0 votes
1 answer
107 views

Use grid file for GDA2020 in QGIS 3.12

I am trying to add a custom crs in QGIS for GDA2020 using grid file GDA94_GDA2020_conformal.gsb. My parameter is proj=utm +zone=51 +south +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +...
Coffeecake's user avatar
0 votes
0 answers
189 views

Using NTV2 transformations in MapInfo

I am investigating the use of MapInfo to apply transformations between GDA94 and GDA2020. I am using MapInfo Pro 2019.1 so the NTv2.xml file has 10 entries relevant to Australia. They come in pair ...
TazAstroSpacial's user avatar
0 votes
0 answers
647 views

Convert from GDA2020 to GDA94 using proj string in PostGIS

Following this answer, I was able to convert from GDA94 to GDA2020 using proj string (I'm using PostGIS). Now is there a way to convert it back? I tried to invert the signs from @JasonD answer but ...
Pedro Pádua's user avatar
2 votes
3 answers
2k views

Is there a proj4 string for GDA2020 (epsg:7844) that we use to transform from 3857 or 4326 to gda2020 using dot spatial .net library

We are using dot spatial library for transformation from one projection to other. We are planning to include the new release GDA 2020 projections. Is it as simple as just adding the proj string for ...
Sameer's user avatar
  • 21
1 vote
1 answer
725 views

Plotting points using AusMap plugin QGIS v3?

I am trying to plot infrastructure points from the AusMap plugin but it does not align with my current CRS. The points are in GDA2020 - when I change my basemap to this it still does not align. I am ...
emmaluna's user avatar
2 votes
1 answer
269 views

Converting Ellipsoidal Heights to GDA2020 Z co-ordinates?

I need to convert UTM 50 X/Ys in GDA2020 at sea level, to GDA94 MGA UTM 50 coordinates. I've used the '7-parameter similarity transformation' from the GDA2020TechnicalManualV1.1.1 paper, and this is ...
user2586567's user avatar
5 votes
0 answers
469 views

Adding GDA2020 NTv2 transformation to ArcGIS 10.5

The implementation of GDA2020 is drawing near! In an effort to be ready before time I have downloaded the NTv2 Grid Shift Binary (GSB) transformation grid from ISCM (available here) who are the ...
Michael Stimson's user avatar
6 votes
1 answer
848 views

Using new Australian Datum GDA2020 in SQL Server 2016?

We have several hundred datasets/spatial layers within SQL Server 2016 which has the geometry datum/projection of GDA1994 Zone 54 (EPSG:28354) and we wish to reproject/shift the spatial locations to ...
Tony Jordan's user avatar
8 votes
4 answers
3k views

Proj.4/GDAL/QGIS Transformation between CRSs that are defined the same

I'm helping to ensure that open source software can handle Australia's new datum appropriately, see ICSM's website for details on the GDA2020 project. Now, QGIS has already got the definitions of ...
Alex Leith's user avatar
  • 13.5k
5 votes
1 answer
429 views

What is the function of GDA2020 dynamic formats?

Comments against another question on GDA2020 identified that while EPSG 9 includes static GDA2020 support, there are apparently some dynamic (temporal dependency) variant(s). How do the GDA2020 ...
BradHards's user avatar
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7 votes
4 answers
2k views

Transition to GDA2020 in QGIS?

Just wondering if anyone knows when and how to do the transition to GDA2020 in QGIS? I assume it will be as simple as selecting the CRS but it doesn't appear to be available as a CRS yet. Currently ...
C. Bigg's user avatar
  • 79