Vertical Datum Transformation

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01-25-2021 05:21 AM
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DanielEccles
New Contributor

Hi, I'm trying to convert ETRS89 (UK) both vertical and horizontal to OSGB36 (OSTN15/OSGM15) using meters ODN as the vertical datum.  ArcPro has the transformation parameters for the horizontal conversion but it doesn't seem to have the vertical transformation available.  Having search the web, I think the following is the latest transformation:

ETRS89 to Newlyn height (2)

Is there somewhere I can download this transformation and if so how do I add it to the ESRI set of verical transformations?  Or, am I going about this all wrong?

Thanks.

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2 Replies
DanPatterson
MVP Esteemed Contributor

Vertical Coordinate Systems in the ArcGIS Platform (esri.com)

maybe got to My Esri, My Organizations, Downloads.

But the only ones available there are

coords.png


... sort of retired...
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BojanŠavrič
Esri Contributor

Thank you, @DanielEccles, for your inquiry. 

Currently, ArcGIS Pro doesn't not include a vertical transformation using OSGM15 geoid model to covert heights to Newlyn (WKID::5701). It is on our list and we are working on it to make it available. 

Unfortunately, Pro also doesn't support custom vertical transformations, so you cannot just add a new one to the set. This is also something on our list, but some other projects came up and we haven't been able to get to it.

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