[postgis-users] Readable reference for <-> the distance operators

[Stephen Mather]

No, that is in fact excellent (actually irritatingly good, I was just
finishing up a write up of my own...), but I should have been more
specific.  I'm looking for a reference to point to for the why it works,
not the how, i.e. how does the structure of the R-Tree index lends itself
to creating a distance operator -- the hierarchy of the tree, the distance
between branches, or what not.

Best,
Steve



On Wed, Nov 20, 2013 at 2:51 PM, Paul Ramsey <pramsey at cleverelephant.ca>wrote:

> Hopefully I'm not too immodest in saying this
>
> http://workshops.boundlessgeo.com/postgis-intro/knn.html
>
> P
>
> On Wed, Nov 20, 2013 at 10:49 AM, Stephen Mather
> <stephen at smathermather.com> wrote:
> > Hi All,
> >
> > What's the best (normal) human readable reference for the PostGIS
> distance
> > operators-- but deep enough to talk about the use of index structure in
> the
> > use of the operators?
> >
> > Thanks,
> > Best,
> > Steve
> >
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