Re: [postgis-users] curves geometries and topology

2014-04-15 Thread Reijer Copier
Thanks! We are currently considering using PostGIS Topology only to maintain a topology aware copy of the data (to be used for analyses where topology matters) and use the original geometry (containing circular strings) when we have to (re)generate output geometry. BTW: Is cgal/sfcgal going

Re: [postgis-users] curves geometries and topology

2014-04-15 Thread Sandro Santilli
On Tue, Apr 15, 2014 at 04:40:34PM +0200, Reijer Copier wrote: Thanks! We are currently considering using PostGIS Topology only to maintain a topology aware copy of the data (to be used for analyses where topology matters) and use the original geometry (containing circular strings) when we

Re: [postgis-users] curves geometries and topology

2014-04-15 Thread RĂ©mi Cura
2014-04-15 16:58 GMT+02:00 Sandro Santilli s...@keybit.net: On Tue, Apr 15, 2014 at 04:40:34PM +0200, Reijer Copier wrote: Thanks! We are currently considering using PostGIS Topology only to maintain a topology aware copy of the data (to be used for analyses where topology matters) and

Re: [postgis-users] curves geometries and topology

2014-04-14 Thread Eric Ladner
As long as they are simple circles, you should be able to convert back and forth between curves and lines. Splines, beziers, et al, are probably not going to work at all and would need to be approximated as lines. http://boundlessgeo.com/2012/01/getting-curvey/ On Mon, Apr 14, 2014 at 8:02 AM,