[postgis-users] Why PostGIS ST_Intersection much slower than ArcGIS Intersect ?
pramsey at opengeo.org
Sat Dec 1 10:11:38 PST 2012
On Fri, Nov 30, 2012 at 11:11 PM, Andrea Peri <aperi2007 at gmail.com> wrote:
> Hi Paul,
> I like understand better this situation.
> I read often that to fast the ST_Intersect() over huge geometry is
> better to clip them on lower size geometries.
> This is understandable for me.
> But the Etienne use-case speak of the ST_Intersection() don't the
> ST_Intersect (that is fast instead).
> My doubt is "Why is fast the ST_Intersects() if it is a huge geometry ?"
> And when you say a "prepared intersection" are speaking of the usual
> teorical solution to clip a huge geometry on a set of lower sized
> geometries ?
> Andrea Peri
> . . . . . . . . .
> qwerty àèìòù
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