[postgis-devel] st_dwithin, st_within, st_dcompletlywithin

[Paul Ramsey]

Hausdorff is actually exposed in CAPI and linked to PostGIS for the 1.5 release.

On Wed, Jul 8, 2009 at 3:13 PM, Martin Davis<mbdavis at refractions.net> wrote:
> That distance metric is known as the Hausdorff Distance.  It's implemented
> in JTS, and probably in GEOS as well.
>
> nicklas.aven at jordogskog.no wrote:
>>
>>
>> A function that gives the answer to for example:
>> "How far away from France can you get in Belgia"
>> To answer that we have to store compare the shortest distance to geometry2
>> from each vertex in geometry1 and finaly find wich vertex in geometry1 that
>> has the highest "mindistance" to geometry2.
>> Hope the idee is possible to understand. Is it of any use?
>
> --
> Martin Davis
> Senior Technical Architect
> Refractions Research, Inc.
> (250) 383-3022
>
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