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## Copyright (C) 1995, 1996, 1997 Friedrich Leisch
##
## 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 2, 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 file. If not, write to the Free Software Foundation,
## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
## usage: retval = triangle_lw (n, b)
##
## Triangular lag window. Subfunction used for spectral density
## estimation.
## Author: FL <Friedrich.Leisch@ci.tuwien.ac.at>
## Description: Triangular lag window
function retval = triangle_lw (n, b)
retval = 1 - (0 : n-1)' * b;
retval = max ([retval'; zeros (1, n)])';
endfunction
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