[postgis-users] Roeck test

[Paul Ramsey]

Wouldn't the ratio of area to perimeter be a similar metric? Also,
wouldn't it be easier to just stop letting politicians draw their own
boundaries? :)

I wonder what the algorithm for minimum enclosing circle is...

(Short answer, no, because we don't have a min-circle routine.)

P.

On Fri, Oct 24, 2008 at 8:59 AM, Lee Meilleur <lee.meilleur at gis.leg.mn> wrote:
>
>
> Has anyone calculated the Roeck test using PostGIS?  This is an area based measure that computes the ratio of the area of a polygon to the area of the minimum enclosing circle for the polygon.  It's used to measure compactness of districts for redistricting applications, basically a way to test for gerrymandering.  Thanks.
>
> Lee Meilleur
> LCC-GIS Office
> Minnesota Legislature
> 100 Rev. Dr. MLK Jr Blvd.
> 55 State Office Building
> St. Paul, MN 55155
> 651.296.0098  Fax: 651.297.3697
> lee.meilleur at gis.leg.mn
> http://www.gis.leg.mn
>
>
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