mahmouxd

%ASHAPE		an ASLIB wrapper to compute ALPHA SHAPEs
%
%		ASHAPE is a convenient wrapper for the
%		ALPHA SHAPE library ASLIB
%		for instructions/options see also:	ASLIB
%
%SYNTAX
%-------------------------------------------------------------------------------
%		P = ASHAPE(X,Y,R,OPT)
%		P = ASHAPE(PO,OPT)

mahmouxd

function [V,S] = alphavol(X,R,fig)
%ALPHAVOL Alpha shape of 2D or 3D point set.
%   V = ALPHAVOL(X,R) gives the area or volume V of the basic alpha shape
%   for a 2D or 3D point set. X is a coordinate matrix of size Nx2 or Nx3.
%
%   R is the probe radius with default value R = Inf. In the default case
%   the basic alpha shape (or alpha hull) is the convex hull.
%
%   [V,S] = ALPHAVOL(X,R) outputs a structure S with fields:
%    S.tri - Triangulation of the alpha shape (Mx3 or Mx4)