1 ## Copyright (C) 2007 Sylvain Pelissier <sylvain.pelissier@gmail.com>
3 ## This program is free software; you can redistribute it and/or modify it under
4 ## the terms of the GNU General Public License as published by the Free Software
5 ## Foundation; either version 3 of the License, or (at your option) any later
8 ## This program is distributed in the hope that it will be useful, but WITHOUT
9 ## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 ## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
13 ## You should have received a copy of the GNU General Public License along with
14 ## this program; if not, see <http://www.gnu.org/licenses/>.
17 ## @deftypefn {Function File} {[@var{psi,x}] =} morlet(@var{lb,ub,n})
18 ## Compute the Morlet wavelet.
21 function [psi,x] = morlet(lb,ub,n)
22 if (nargin < 3); print_usage; end
25 error("n must be strictly positive");
27 x = linspace(lb,ub,n);
28 psi = cos(5.*x) .* exp(-x.^2/2) ;