[PROJ] proj_factors

[Nicolas Bellaiche]

Hi all,

I meet difficulties using the function 'proj_factors' to compute the meridian convergence and the scale factor.

I compute the (lambda, phi) from the cartographic coordinates (x,y), then I call proj_factors and receive the error (latitude or longitude exceeds limit).
When i check where the function send the error, it states that the function Proj->fwd is NULL in the pj_deriv sub-function .

Have you any clue of what could happen?

Thanks again for your help,

Nicolas Bellaiche

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