Adding local VD to coordinate system

[AllProDroneServices]

Good morning,

How can I add a local VD to a defined coordinate system? There are 13 local vertical datums across NZ (we should be using NZVD16 across the nation but the local councils are slow to adopt). I want to add Moturiki 1953 EPSG:5764 to Mount Eden 2000 local circuit. The option is there under the edit coordinate system options but unfortunately it doesn't work....

Any help appreciated

Blake

[AllProDroneServices]

Anyone? Any advice?

[Paulo]

Hi AllPro,

to be able to configure your local VD, you need a file specifying the geoid height for this datum. In case of Moturiki 1953 I downloaded a file  containing a points grid with delta value (geoid height) from LINZ in geopackage  format.

In GM, I created a grid from these point features and exported as GeoTiff. Then you can just follow https://agisoft.freshdesk.com/support/solutions/articles/31000148332-how-to-use-height-above-geoid-for-the-coordinate-system to create your compound CS...

You can always PM me for more details...

[AllProDroneServices]

Paul,

Thankyou very much Ill have a look now and give it a whirl.