[postgis-users] ST_Split just doesn't work for me.

[Alexander.Mahrou at ch2m.com]

Hello List,

I've got two polyline tables. I'm attempting to segment my lines by the intersections of the other lines.

create table segments as SELECT ST_CollectionExtract(ST_Split(a.newgeom,b.geom),2) as geom from
                line1 a, line2 b WHERE ST_Intersects(a.newgeom,b.geom) = true

The end result is the geometry that I started with. What am I doing wrong?

Alex Mahrou
Oil, Gas & Chemicals

CH2M HILL
9191 S. Jamaica St.
Englewood, CO 80112
www.ch2m.com

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