[pgrouting-dev] difference between st_convexhull and pgr_pointsAsPolygon

[Vicky Vergara]

> Date: Mon, 13 Apr 2015 20:50:47 +0100
> From: dave.potts at pinan.co.uk
> To: pgrouting-dev at lists.osgeo.org
> Subject: [pgrouting-dev] difference between st_convexhull and	pgr_pointsAsPolygon
> 
> Hi list
> 
> I am doing some with the end results of a driving distance calculation,  
> I can use either st_convexhull or pgr_pointsAsPolygon to turn the end 
> results in to a polygon
> 
> Q. What is the advantage of using pgr_pointsAsPolygon instead of using 
> st_convexhull?
> 
> regards
> 
> Dave.
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> pgrouting-dev at lists.osgeo.org
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By inspecting pgRouting code, there is some checking taking place...
https://github.com/pgRouting/pgrouting/blob/develop/src/driving_distance/sql/routing_dd.sql#L77

But now that you are one it, does it give you different results?

Vicky.
 		 	   		  
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