[PROJ] Compound ESRI+EPSG

[Even Rouault]

Javier,

Several options are already possible:

- by name: "NAD_1983_HARN_Adj_MN_Ramsey_Meters + NAVD88 height"

- using OGC URN compound CRS syntax: 
"urn:ogc:def:crs,crs:ESRI::103668,crs:EPSG::5703"

That said having "ESRI:103668+EPSG:5703" to work would be good (I can't 
remember OGC URN syntax without looking at an example). You could have a 
try at that after 
https://github.com/OSGeo/PROJ/blob/master/src/iso19111/io.cpp#L6381 with 
a new tokens.size() == 3 case.

Even

Le 12/04/2021 à 17:29, Javier Jimenez Shaw a écrit :
> Hi
>
> I am wondering how to combine a horizontal ESRI crs with a vertical 
> EPSG crs. I would say there is no problem if I just create a WKT 
> string with the combination, right?
> Let's say ESRI:103668 "NAD_1983_HARN_Adj_MN_Ramsey_Meters" and 
> EPSG:5703 "NAVD88 height". Is there any shortcut in projinfo to create it?
>
> Is there any "compressed" way to identify it? Something like 
> "ESRI:103668+EPSG:5703"
>
> Thanks,
> Javier
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