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1 ## Copyright (C) 1996, 2000, 2002, 2004, 2005, 2007 |
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2 ## Auburn University. All rights reserved. |
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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} {@var{pv} =} sysreorder (@var{vlen}, @var{list}) |
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22 ## |
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23 ## @strong{Inputs} |
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24 ## @table @var |
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25 ## @item vlen |
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26 ## Vector length. |
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27 ## @item list |
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28 ## A subset of @code{[1:vlen]}. |
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29 ## @end table |
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30 ## |
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31 ## @strong{Output} |
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32 ## @table @var |
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33 ## @item pv |
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34 ## A permutation vector to order elements of @code{[1:vlen]} in |
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35 ## @code{list} to the end of a vector. |
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36 ## @end table |
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37 ## |
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38 ## Used internally by @code{sysconnect} to permute vector elements to their |
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39 ## desired locations. |
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40 ## @end deftypefn |
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41 |
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42 ## Author: A. S. Hodel <a.s.hodel@eng.auburn.edu> |
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43 ## Created: August 1995 |
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44 |
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45 function pv = sysreorder (vlen, list) |
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46 |
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47 if (nargin != 2) |
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48 print_usage (); |
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49 endif |
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50 |
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51 ## disp('sysreorder: entry') |
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52 |
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53 pv = 1:vlen; |
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54 ## make it a row vector |
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55 list = reshape(list,1,length(list)); |
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56 A = pv' * ones (size (list)); |
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57 B = ones (size (pv')) * list; |
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58 X = (A != B); |
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59 if (! isvector (X)) |
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60 y = min (X'); |
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61 else |
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62 y = X'; |
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63 endif |
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64 z = find (y == 1); |
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65 if (! isempty (z)) |
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66 pv = [z, list]; |
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67 else |
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68 pv = list; |
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69 endif |
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70 |
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71 endfunction |
