[PROJ] Rads/Degs

[Even Rouault]

On mardi 12 février 2019 11:16:56 CET Paul Ramsey wrote:
> Is there some clean way to tell proj_create_crs_to_crs() that I would
> like my input angular units and output angular units to be degrees? As
> it stands I'm just using proj_angular_input and proj_angular_output to
> test and apply the change pre/post transform.

Hum, with which PROJ version ?

I guess with PROJ 5.x, the angular unit was radians

With PROJ master, proj_create_crs_to_crs() object will expect (resp return) 
the angular unit of the source (resp target) CRS, which will generally be 
degrees (except a few ancient French SRS that take grads)

The function at 
https://github.com/OSGeo/proj.4/blob/master/src/apps/cs2cs.cpp#L212
can be used to get the angular unit of a CRS.

Even

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