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annotate scripts/signal/triangle_lw.m @ 8874:bd1b1fe9c6e9 ss-3-1-53

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author John W. Eaton <jwe@octave.org>
date Wed, 25 Feb 2009 18:35:47 -0500
parents f084ba47812b
children 1bf0ce0930be
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1 ## Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2002, 2005, 2007
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2 ## Friedrich Leisch
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3 ##
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4 ## This file is part of Octave.
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5 ##
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6 ## Octave is free software; you can redistribute it and/or modify it
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7 ## under the terms of the GNU General Public License as published by
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8 ## the Free Software Foundation; either version 3 of the License, or (at
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9 ## your option) any later version.
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10 ##
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11 ## Octave is distributed in the hope that it will be useful, but
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12 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 ## General Public License for more details.
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15 ##
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16 ## You should have received a copy of the GNU General Public License
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17 ## along with Octave; see the file COPYING. If not, see
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18 ## <http://www.gnu.org/licenses/>.
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19
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20 ## -*- texinfo -*-
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21 ## @deftypefn {Function File} {} triangle_lw (@var{n}, @var{b})
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22 ## Triangular lag window. Subfunction used for spectral density
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23 ## estimation.
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24 ## @end deftypefn
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26 ## Author: FL <Friedrich.Leisch@ci.tuwien.ac.at>
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27 ## Description: Triangular lag window
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29 function retval = triangle_lw (n, b)
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31 if (nargin != 2)
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32 print_usage ();
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33 endif
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34
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35 retval = 1 - (0 : n-1)' * b;
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36 retval = max ([retval'; (zeros (1, n))])';
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37
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38 endfunction
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