[postgis-users] break lines at intersections

[Stephen V. Mather]

Oh, that's right, but it applies the index first-- my bad.  Thinking of
ST_Expand and ST_Distance from early days... .

Stephen Mather
Geographic Information Systems (GIS) Manager
(216) 635-3243
svm at clevelandmetroparks.com
clevelandmetroparks.com





-----Original Message-----
From: Sandro Santilli [mailto:sandro.santilli at gmail.com] On Behalf Of Sandro
Santilli
Sent: Friday, May 18, 2012 2:57 AM
To: svm at clevelandmetroparks.com; PostGIS Users Discussion
Subject: Re: [postgis-users] break lines at intersections

On Thu, May 17, 2012 at 12:17:27PM -0400, Stephen V. Mather wrote:
> Also, ST_DWithin is a bounding box test, so it's fast but not accurate.

ST_DWithin is not just a bounding box test, but considers the actual shape.

--strk;