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1 # Copyright (C) 1996,1998 A. Scottedward Hodel |
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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 the |
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7 # Free Software Foundation; either version 2, or (at your option) any |
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8 # later version. |
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9 # |
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10 # Octave is distributed in the hope that it will be useful, but WITHOUT |
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11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 # 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, 675 Mass Ave, Cambridge, MA 02139, USA. |
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18 |
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19 function [n,nz,m,p,yd] = sysdimensions(sys) |
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20 # [n,nz,m,p[,yd]] = sysdimensions(sys) |
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21 # return the number of states, inputs, and outputs in the system sys. |
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22 # inputs: sys: system data structure |
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23 # outputs: |
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24 # n: number of continuous states |
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25 # nz: number of discrete states |
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26 # m: number of system inputs |
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27 # p: number of system outputs |
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28 # yd: is the discrete output vector: yd(ii) = 1 if output ii is sampled, |
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29 # yd(ii) = 0 if output ii is continous |
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30 # |
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31 # see also: sysgetsignals, sysgettsam |
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32 |
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33 if(nargout > 5 | nargin != 1) |
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34 usage("[n,nz,m,p[,yd]] = sysdimensions(sys)"); |
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35 elseif(!is_struct(sys)) |
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36 usage("[n,nz,m,p] = sysdimensions(sys)"); |
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37 endif |
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38 |
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39 n = sys.n; |
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40 nz = sys.nz; |
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41 m = rows(sys.inname); |
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42 p = rows(sys.outname); |
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43 yd = sys.yd; |
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44 |
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45 endfunction |
