<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">2014-04-15 16:58 GMT+02:00 Sandro Santilli <span dir="ltr"><<a href="mailto:strk@keybit.net" target="_blank">strk@keybit.net</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="">On Tue, Apr 15, 2014 at 04:40:34PM +0200, Reijer Copier wrote:<br>
> Thanks!<br>
><br>
> We are currently considering using PostGIS Topology only to maintain<br>
> a topology aware copy of the data (to be used for analyses where<br>
> topology matters) and use the original geometry (containing circular<br>
> strings) when we have to (re)generate output geometry.<br>
><br>
> BTW: Is cgal/sfcgal going to replace geos eventually? It would be<br>
> great if this limitation (= curved geometries being a second class<br>
> citizen) was somehow lifted in future versions PostGIS.<br>
<br>
</div>It could be, once it gets to support everything currently supported<br>
by the GEOS backend and proves to be better maintained :)<br>
<br>
--strk;<br>
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</div></div></blockquote></div><br><br></div><div class="gmail_extra">Huhu you are touching a sensitive point.<br></div><div class="gmail_extra">Mostly GEOS and CGAL don't share the same purpose,<br>so it is unfair to compare them.<br>
<br></div><div class="gmail_extra">If you are going to need precise computation on abstract type, <br>you want a math lib (cgal). If you are doing approximate computation because your data is not precise anyway,<br></div>
<div class="gmail_extra">GEOS is fast and reliable.<br><br><br></div><div class="gmail_extra">That being said, PostGis Topology uses neither CGAL or GEOS, and that could improve greatly performance and add functions.<br>This is an open topic.<br>
<br></div><div class="gmail_extra">Cheers,<br>RĂ©mi-C<br></div><div class="gmail_extra"><br></div></div>