[postgis-users] Center line

[Suhr, Ralf]

Impossible I think,
 
the result can be a point or a line.
You can import your polygon into grass gis, convert vector to raster and use r.thin to see what an algorithm can do.
 
Gr Ralf

	-----Ursprüngliche Nachricht-----
	Von: postgis-users-bounces at postgis.refractions.net [mailto:postgis-users-bounces at postgis.refractions.net] Im Auftrag von eehab hamzeh
	Gesendet: Donnerstag, 20. August 2009 13:54
	An: postgis-users at postgis.refractions.net
	Betreff: [postgis-users] Center line
	
	
	Hello, 
	
	I am looking for algorithm or functions implemented in postgis to find the center line of a a closed polygon, for example river, street,etc.
	
	Kind regards
	
	Ihab 
	
	
	
	
	
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