--- /dev/null
+## Copyright (C) 2007 Sylvain Pelissier <sylvain.pelissier@gmail.com>
+##
+## 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/>.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {[@var{psi,x}] =} morlet(@var{lb,ub,n})
+## Compute the Morlet wavelet.
+## @end deftypefn
+
+function [psi,x] = morlet(lb,ub,n)
+ if (nargin < 3); print_usage; end
+
+ if (n <= 0)
+ error("n must be strictly positive");
+ endif
+ x = linspace(lb,ub,n);
+ psi = cos(5.*x) .* exp(-x.^2/2) ;
+endfunction