<div dir="ltr">Thanks, Clifford, for some very informative notes. I have taken the liberty<div>to add them (with proper attribution) as a comment to the</div><div>implementation in PJ_lcca.c, to let people know how (preferably not)</div><div>to use this projection.</div><div><br></div><div>(The pull request sits over at <a href="https://github.com/OSGeo/proj.4/pull/640">https://github.com/OSGeo/proj.4/pull/640</a> )</div><div><br></div><div>/Thomas </div><div><div><div class="gmail_extra"><br><div class="gmail_quote">2017-11-03 15:54 GMT+01:00 Clifford J Mugnier <span dir="ltr"><<a href="mailto:cjmce@lsu.edu" target="_blank">cjmce@lsu.edu</a>></span>:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p>The French Army Truncated Cubic Lambert (partially conformal) Conic projection is the Legal system for the projection in France between the late 1800s and 1948 when the French Legislature changed the law to recognize the fully conformal version. It was
(might still be in one or two North African prior French Colonies) used in North Africa in Algeria, Tunisia, & Morocco, as well as in Syria during the Levant.</p>
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<p>Last time I have seen it used was about 30+ years ago in Algeria when it was used to define Lease Block boundaries for Petroleum Exploration & Production.</p></div></div></blockquote></div></div></div></div></div>