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<div><span style="font-size: 10pt;">Hi all, </span></div>
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<div><font size="2">I meet difficulties using </font>the function 'proj_factors' to compute <font size="2">the meridian convergence and the scale factor.</font></div>
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<div>I compute the (lambda, phi) from the cartographic coordinates (x,y), then I call proj_factors and receive the error (<span style="font-size: 10pt;">latitude</span><span style="font-size: 10pt;"> or </span><span style="font-size: 10pt;">longitude </span><span style="font-size: 10pt;">exceeds
limit). </span></div>
<div>When i check where the function send the error, it states that the function Proj->fwd is NULL in the pj_deriv sub-function . </div>
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<div>Have you any clue of what could happen?</div>
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<div>Thanks again for your help,</div>
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<div>Nicolas Bellaiche</div>
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