function nvec = vecnorm(vec)
% 
% VECNORM: Normalise the vectors.
% 
% Calling Sequence:
% 
%   nvec = vecnorn(vec);
% 
% INPUT:
% 
%   vec		: An array of column vectors represented by a matrix of
% 		size (dim,nv), where is the dimension of the vector and
% 		nv the number of vectors.
%
% OUTPUT:
% 
%   nvec		: Normalised vectors, matrix the smae size as vec.
% 
% Description:
% 
%   Normalises the array of vectors, returning the unit vectors.
% 
% Examples:
% 
%   Normalise the two vectors (0.0,2.0,1.3) and (1.5,3.4,2.3)
%
%   nvec = vecnorm([0.0 1.5; 2.0 3.4; 1.3 2.3]);
%
%    Copyright (C) 2000 Mark Spink
%
%    This program is free software: you can redistribute it and/or modify
%    it under the terms of the GNU General Public License as published by
%    the Free Software Foundation, either version 3 of the License, or
%    (at your option) any later version.

%    This program is distributed in the hope that it will be useful,
%    but WITHOUT ANY WARRANTY; without even the implied warranty of
%    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
%    GNU General Public License for more details.
%
%    You should have received a copy of the GNU General Public License
%    along with this program.  If not, see <http://www.gnu.org/licenses/>.

nvec = vec./repmat(sqrt(sum(vec.^2)),[size(vec,1) ones(1,ndims(vec)-1)]);

end
