[postgis-users] Concave hull problem & delaunay triangulation - help needed please

[Simon Greener]

Brent,

> I have Simon's code working fine, at least using his example invocation, from:
> http://www.spatialdbadvisor.com/postgis_tips_tricks/290/r-based-delaunay-triangulation-function-for-postgis-using-the-deldir-package
>
> But I can't figure out how to make it work with my point data. I don't know R or PL/R well enough to adapt it.
>
> I have a set of sample points in a table:
>
>  Column |      Type       |                                  --------+-----------------+-----------------
>  id     | integer         | not null default
>  geom   | geometry(Point) |
> Can anyone explain, ideally in words of one syllable or less, how Simon's function from the link above needs to be adapted to read my points >dataset as input?


Try something like this:

>
>> Once I get the triangles as an output set I can use Postgis for the rest...
>
> Thanks,
>
>   Brent Wood
>
>




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