[postgis-users] distance from centroid to the points that form the outer boundary of the polygon

[Edward Mac Gillavry]

Hi there,

How about calculating the MinimumBoundingCircle of your geometry first http://postgis.refractions.net/docs/ST_MinimumBoundingCircle.html. Once you have the circle, it shouldn't be too difficult to derive the radius from this?

HTH

Edward

From: yaminijsingh at live.com
To: postgis-users at postgis.refractions.net
Date: Mon, 30 Jul 2012 15:04:15 +0200
Subject: [postgis-users] distance from centroid to the points that form the outer boundary of the polygon





Hi All,

 

I am looking for suggestions for the following problem I have
at hand.

 

1.      
I have a table that contain multipolygons

2.      
I want to calculate the maximum distance of
points that form the polygon  from the centroid
of the polygon. For example of the polygon is formed of 50 points then I want
to have distance of all the 50 points from the centroid of the polygon.

 

I am not sure if someone has done this before. But I am
finding it difficult to implement it. Any help in this regards is welcome…
Best,YJS 		 	   		  

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