Support creating coordinate system from WKT string?

[snowman2]

Currently when attempting to create a coordinate system PJ* object from a WKT using proj_create(), I see this error:

Input string:

CS[ellipsoidal,2],AXIS["geodetic latitude (Lat)",north,ORDER[1],ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9122]]],AXIS["geodetic longitude (Lon)",east,ORDER[2],ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9122]]]

Error:

proj_create: unhandled keyword: CS

Is there any desire to support creating a coordinate system PJ* using a WKT string in PROJ?

[rouault]

I don't think that's easily possible, nor there is a strong interest for that. For backward compatibility reasons, WKT2 has chosen a odd WKT construct for CS[] where the children of CS are at the same level of it, which would break assumptions in the main WKT parser

[snowman2]

That makes sense why it doesn't work currently. With PROJ JSON support it isn't entirely necessary to have it.