|
2847
|
1 ## Copyright (C) 1996, 1997 John W. Eaton |
|
2313
|
2 ## |
|
|
3 ## This file is part of Octave. |
|
|
4 ## |
|
|
5 ## Octave is free software; you can redistribute it and/or modify it |
|
|
6 ## under the terms of the GNU General Public License as published by |
|
|
7 ## the Free Software Foundation; either version 2, or (at your option) |
|
|
8 ## any later version. |
|
|
9 ## |
|
|
10 ## Octave is distributed in the hope that it will be useful, but |
|
|
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of |
|
|
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|
|
13 ## General Public License for more details. |
|
|
14 ## |
|
|
15 ## You should have received a copy of the GNU General Public License |
|
|
16 ## along with Octave; see the file COPYING. If not, write to the Free |
|
5307
|
17 ## Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
|
|
18 ## 02110-1301, USA. |
|
245
|
19 |
|
3369
|
20 ## -*- texinfo -*- |
|
|
21 ## @deftypefn {Function File} {} flipud (@var{x}) |
|
|
22 ## Return a copy of @var{x} with the order of the rows reversed. For |
|
|
23 ## example, |
|
3426
|
24 ## |
|
3369
|
25 ## @example |
|
|
26 ## @group |
|
|
27 ## flipud ([1, 2; 3, 4]) |
|
|
28 ## @result{} 3 4 |
|
|
29 ## 1 2 |
|
|
30 ## @end group |
|
|
31 ## @end example |
|
4869
|
32 ## |
|
|
33 ## Due to the difficulty of defining which axis about which to flip the |
|
|
34 ## matrix @code{flipud} only work with 2-d arrays. To flip N-d arrays |
|
|
35 ## use @code{flipdim} instead. |
|
5642
|
36 ## @seealso{fliplr, flipdim, rot90, rotdim} |
|
3369
|
37 ## @end deftypefn |
|
4
|
38 |
|
2314
|
39 ## Author: jwe |
|
|
40 |
|
2311
|
41 function y = flipud (x) |
|
4
|
42 |
|
|
43 if (nargin != 1) |
|
6046
|
44 print_usage (); |
|
4
|
45 endif |
|
|
46 |
|
4869
|
47 if (ndims (x) > 2) |
|
|
48 error ("flipud: Only works with 2-d arrays") |
|
|
49 endif |
|
|
50 |
|
4
|
51 nr = rows (x); |
|
|
52 y = x (nr:-1:1, :); |
|
|
53 |
|
|
54 endfunction |
