<div dir="ltr"><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jan 12, 2016 at 1:17 AM, Andrea Aime <span dir="ltr"><<a href="mailto:andrea.aime@geo-solutions.it" target="_blank">andrea.aime@geo-solutions.it</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>When you paste a PRJ, first it parses it and tries to perform a match against the official EPSG database, by first making an indexed</div><div>search by projection name and a few other params, falling on a brute force scan and compare if the first does not match.</div><div>If not even that works, then it has a secondary Lucene index with all projections WKTs stored inside, and it will do a </div><div>text based search against it, hoping to find something similar (aka "shot in the dark").</div></blockquote></div><br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">Thanks for the explanation. The process on the surface seems straightforward enough. I was expecting that a tool like proj would be used to normalize the file. This actually makes great sense now that I think about it.</blockquote><div><br></div><div>Thanks,</div><div>Clifford </div><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><div>@osm_seattle<br></div><div><a href="http://osm_seattle.snowandsnow.us" target="_blank">osm_seattle.snowandsnow.us</a></div><div>OpenStreetMap: Maps with a human touch</div></div></div>
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