[postgis-users] ST_StartPoint() for MultiLineStrings

[Paul Ramsey]

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 <daithiquinn at 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
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