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1 ## Copyright (C) 1995, 1996, 1997 Andreas Weingessel |
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2 ## |
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3 ## This file is part of Octave. |
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4 ## |
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5 ## Octave is free software; you can redistribute it and/or modify it |
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6 ## under the terms of the GNU General Public License as published by |
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7 ## the Free Software Foundation; either version 2, or (at your option) |
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8 ## any later version. |
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9 ## |
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10 ## Octave is distributed in the hope that it will be useful, but |
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11 ## WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 ## General Public License for more details. |
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14 ## |
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15 ## You should have received a copy of the GNU General Public License |
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16 ## along with Octave; see the file COPYING. If not, write to the Free |
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17 ## Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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18 ## 02110-1301, USA. |
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19 |
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20 ## -*- texinfo -*- |
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21 ## @deftypefn {Function File} {} sinewave (@var{m}, @var{n}, @var{d}) |
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22 ## Return an @var{m}-element vector with @var{i}-th element given by |
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23 ## @code{sin (2 * pi * (@var{i}+@var{d}-1) / @var{n})}. |
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24 ## |
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25 ## The default value for @var{d} is 0 and the default value for @var{n} |
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26 ## is @var{m}. |
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27 ## @end deftypefn |
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28 |
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29 ## Author: AW <Andreas.Weingessel@ci.tuwien.ac.at> |
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30 ## Description: Compute a sine wave |
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31 |
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32 function x = sinewave (m, n, d) |
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33 |
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34 if (nargin > 0 && nargin < 4) |
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35 if (nargin < 3) |
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36 d = 0; |
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37 endif |
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38 if (nargin < 2) |
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39 n = m; |
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40 endif |
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41 x = sin (((1 : m) + d - 1) * 2 * pi / n); |
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42 else |
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43 usage ("sinewave (m, n, d)"); |
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44 endif |
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45 |
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46 endfunction |
