[Proj] Fastest way to compare projetion definitions

Calogero Mauceri mauceri at actgate.com
Tue Apr 24 03:04:00 EST 2012


I need to compare two projections definitions say

projPJ p1 and projPJ p2

in order to compare them I'm currently getting their pro4 string 
definition, using pj_get_def, and comparing the two proj4 strings.
I wonder if there is a faster way to compare them.
I noticed there is an undocumented pj_compare_datums function in 
proj_api.h, but I'm not sure it can be used for that purpose.


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