When ST_NumGeometries == 1, you can run ST_StartPoint on ST_GeometryN(geom,1). Where ST_NumGeometries > 1 you are in "interpretation land". What's the start point of a geometry with two lines?
P. On Tue, Sep 25, 2012 at 1:38 PM, David Quinn <daithiqu...@gmail.com> wrote: > As ST_StartPoint( multilinestring ) returns NULL for PostGIS 2.0 > (http://postgis.refractions.net/docs/ST_StartPoint.html ), what > approach can be used to identify the start and end points of a > multilinestring? > > Thanks, > David > _______________________________________________ > postgis-users mailing list > postgis-users@postgis.refractions.net > http://postgis.refractions.net/mailman/listinfo/postgis-users _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
