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1 ## Copyright (C) 1996 Auburn University. All rights reserved. |
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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 3 of the License, or (at |
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8 ## your option) 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, see |
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17 ## <http://www.gnu.org/licenses/>. |
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18 |
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19 ## -*- texinfo -*- |
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20 ## @deftypefn {Function File} {@var{pv} =} sysreorder (@var{vlen}, @var{list}) |
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21 ## |
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22 ## @strong{Inputs} |
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23 ## @table @var |
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24 ## @item vlen |
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25 ## Vector length. |
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26 ## @item list |
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27 ## A subset of @code{[1:vlen]}. |
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28 ## @end table |
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29 ## |
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30 ## @strong{Output} |
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31 ## @table @var |
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32 ## @item pv |
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33 ## A permutation vector to order elements of @code{[1:vlen]} in |
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34 ## @code{list} to the end of a vector. |
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35 ## @end table |
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36 ## |
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37 ## Used internally by @code{sysconnect} to permute vector elements to their |
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38 ## desired locations. |
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39 ## @end deftypefn |
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40 |
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41 ## Author: A. S. Hodel <a.s.hodel@eng.auburn.edu> |
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42 ## Created: August 1995 |
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43 |
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44 function pv = sysreorder (vlen, list) |
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45 |
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46 ## disp('sysreorder: entry') |
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47 |
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48 pv = 1:vlen; |
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49 ## make it a row vector |
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50 list = reshape(list,1,length(list)); |
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51 A = pv'*ones(size(list)); |
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52 B = ones(size(pv'))*list; |
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53 X = (A != B); |
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54 if(!isvector(X)) |
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55 y = min(X'); |
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56 else |
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57 y = X'; |
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58 endif |
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59 z = find(y == 1); |
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60 if(!isempty(z)) |
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61 pv = [z, list]; |
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62 else |
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63 pv = list; |
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64 endif |
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65 |
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66 endfunction |
