[postgis-devel] New function ST_MinimumDiameter() ?

[Nicklas Avén]

Hallo Stefan 

Isn't MinimumBOundingCircle usable?
http://postgis.net/docs/manual-dev/ST_MinimumBoundingCircle.html
I guess that comes from the same function in Geos.

>From that you can get the diameter by just use
ST_XMax(circle)-ST_XMin(circle)

Or do I misunderstand?

/Nicklas


On Sun, 2015-02-08 at 20:44 +0100, Stefan Keller wrote:
> Hi Regina and Paul
> 
> I'd like to use function ST_MinimumDiameter() in PostGIS which
> obviously is not yet ported from GEOS.
> Are there potentially other nice functions like this, which could be
> made available in PostGIS?
> Should I try to make a list?
> 
> Yours, S.
> 
> 2015-02-06 21:34 GMT+01:00 Stefan Keller <sfkeller at gmail.com>:
> > Hi,
> >
> > While asking about how to calculate the Oriented Bounding Box (OBB) of
> > a polygon or point set [1] I realized that there exists a function
> > MinimumDiameter() in GEOS [2].
> > Now, I'm wondering how to integrate this into PostGIS.
> > Unfortunately I'm not a C programmer and i don't how to the process
> > goes for new features in PostGIS.
> > Can somebody help?
> >
> > Yours, S.
> >
> > [1] http://gis.stackexchange.com/questions/133327/how-to-calculate-the-oriented-bounding-box-obb-of-a-polygon-or-point-set
> > [2] http://geos.refractions.net/ro/doxygen_docs/html/classgeos_1_1algorithm_1_1MinimumDiameter.html
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