[postgis-users] convex hull

[Bogumił Szady]

Hi,
You can use concave hulls. Eventually other methods... See

http://www.spatialanalysisonline.com/

Bogumil

Stephen Crawford pisze:
> All,
>
> I'm trying to get the polygon outline of a collection of points.  I 
> used ConvexHull, and what I got was--hence the name--convex.  Is there 
> a way to get a more exact outline?  In my image below, the points are 
> in purple and the convex hull is in red.  I want to get a poly that 
> more closely matches the points.
>
> Thanks,
> Steve
>
>
> -- 
> Stephen Crawford
> Center for Environmental Informatics
> The Pennsylvania State University
> src176 at psu.edu
> 814.865.9905
> ------------------------------------------------------------------------
>
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-- 


-------------------------------

dr Bogumił Szady
mail: szady at kul.lublin.pl <mailto:szady at kul.lublin.pl>
www: hgis.kul.lublin.pl <htttp://hgis.kul.lublin.pl>