[postgis-users] break lines at intersections
Pedro Costa
pedrocostaarma at sapo.pt
Thu May 17 08:23:48 PDT 2012
Great Nicolos, works...
It is possible select lines from one table a less than 3 meters from
lines from another table?and delete them...
thanks
Em 17-05-2012 15:41, Nicolas Ribot escreveu:
> Hi Pedro,
>
> select (st_dump(st_union(geom))).geom from lines;
>
> will cut your network of lines at intersections.
>
> Nicolas
>
> On 17 May 2012 11:57, Pedro Costa <pedrocostaarma at sapo.pt
> <mailto:pedrocostaarma at sapo.pt>> wrote:
>
> does anyone know how I can cut the lines at intersectionslike the
> image attached?
>
> I can´t install postgis 2.0 for now....
>
> I see a few examples with st_union and st_dump but i don't
> understand...
>
>
> Thanks
>
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