Re: [postgis-users] splitting linestrings with a polygon

2019-08-20 Thread paul.malm
Thanks, Nicolas! Från: postgis-users [mailto:postgis-users-boun...@lists.osgeo.org] För Nicolas Ribot Skickat: den 20 augusti 2019 09:21 Till: PostGIS Users Discussion Ämne: Re: [postgis-users] splitting linestrings with a polygon Hi, Keep the geometry column as multilinestring, as resulting

Re: [postgis-users] splitting linestrings with a polygon

2019-08-20 Thread Nicolas Ribot
Hi, Keep the geometry column as multilinestring, as resulting splitting can produce such objects, but add a st_multi after the intersection, on the update clause: ... SET the_geom = st_multi(ST_Intersection(b.the_geom, p.the_geom)) It will force geometries to be multi, even if it only contains on

[postgis-users] splitting linestrings with a polygon

2019-08-20 Thread paul.malm
Hi, I have a problem with MultiLinestrings/Linestrings. I have one layer with Linestrings which I would like to split in the intersections of a polygon (MultiPolygon) in a polygon layer. I tried this: UPDATE public."linelayer" b SET the_geom = ST_Intersection(b.the_geom, p.the_geom) FROM