“Today, Many GIS users are unaware that metre-level misalignments between WGS84 basemaps and modern Authoritative GDA2020 datasets are common. This can cause confusion and lower confidence in the accuracy of authoritative datasets and basemaps.” – sound familiar? Read the article here: ArcGIS GDA2020 Transformation Support | Esri Australia Technical Blog
As one of those users, I often take data in WGS1984 or GDA1994 in the project tool as GDA2020, and accept the default transformation:
And I was yesterday-years-old when I learnt that there are much more accurate transformations, read the whole blog here
How can I confirm I suspect Pro 3.4 would have the newest transformation installed already (WKID 8447, 8446). Anyone know how to search by EPSG WKID in ArcGIS Pro?
I find Pro not so intuitive having a big drop down like below screen grab. I have done a visual inspection as long as my patience took me.
I think I may need to install….. So far, I have found work steps that don’t work for me (yet) - How To: Install a New NTv2 Geographic Transformation and Grid File for Use in ArcGIS Pro - where do I download the grid files from Esri Australia?
Cheers,
GDA3000
