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1 ### Copyright (C) 1996 John W. Eaton |
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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, 59 Temple Place - Suite 330, Boston, MA |
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18 ### 02111-1307, USA. |
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19 |
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2311
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20 ## usage: reshape (a, m, n) |
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21 ## |
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22 ## Form an m x n matrix from the elements of a (taken in Fortran's |
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23 ## column major ordering). |
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24 ## |
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25 ## See also: `:', do_fortran_indexing |
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26 |
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2311
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27 function retval = reshape (a, m, n) |
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28 |
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29 if (nargin != 3) |
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904
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30 usage ("reshape (a, m, n)"); |
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31 else |
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32 [nr, nc] = size (a); |
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33 if (nr * nc == m * n) |
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2269
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34 dfi = do_fortran_indexing; |
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35 istno = implicit_str_to_num_ok; |
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917
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36 unwind_protect |
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2269
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37 do_fortran_indexing = 1; |
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38 implicit_str_to_num_ok = 1; |
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917
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39 retval = zeros (m, n); |
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40 retval (:) = a; |
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2269
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41 if (isstr (a)) |
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42 retval = setstr (retval); |
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43 endif |
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917
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44 unwind_protect_cleanup |
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2269
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45 do_fortran_indexing = dfi; |
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46 implicit_str_to_num_ok = istno; |
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917
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47 end_unwind_protect |
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48 else |
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49 error ("reshape: sizes must match"); |
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50 endif |
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51 endif |
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52 |
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53 endfunction |
