[Qgis-developer] fTOOLS Delaunay triangulation

[kimaidou]

Hi list

Speaking about delaynay triangulation, voronoi diagram, etc... I am
looking for a way to create concave (and not convex) hull of a set of
points.  I have made several google searches, and what I need seems to
be the implementation of alpha shapes. Basically, you define a
parameters to tell how much you want the final polygone to be concave.

Ok, I am trying to explain (english english) : I think when a delaynay
triangulation is made for a set of points, we are very close to be
able to male a concave hull, no ?

What do you think ?
Kimaidou

2009/5/21, Milena Nowotarska <do.milenki at gmail.com>:
> Thank you Carson,
>
> I must add (as I again respond only to the sender, I mean Giovanni,
> not to the whole list ;)
> that in Help Delaunay triangulation description is missing
>
> As to the point ID:
> eg. input layer point is 12
> output layer is 11
> decreasing
> looks like i have to improve my English as well ;)
>
> Best
> Milena
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