>>I try with the ST_Difference and the ST_Intersections but both seem to >>work only with geometries of same type.
>ST_Difference should work. >Do you have a _small_ example showing it doesn't ? oops sorry, I need to explain better The ST_Difference effectively work with two geometry of different type, but not always retrive the external portion, the example I post show an example of because this happened. 2011/2/16 strk <[email protected]> > On Tue, Feb 15, 2011 at 11:16:44PM +0100, aperi2007 wrote: > > Hi, > > > > I need to retrieve the portion of a line external to a polygon, > > I try with the ST_Difference and the ST_Intersections but both seem to > > work only with geometries of same type. > > ST_Difference should work. > Do you have a _small_ example showing it doesn't ? > > --strk; > > () Free GIS & Flash consultant/developer > /\ http://strk.keybit.net/services.html > -- ----------------- Andrea Peri . . . . . . . . . qwerty àèìòù -----------------
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