--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/scripts/general/flipdim.m	Tue Sep 21 15:45:48 2004 +0000
@@ -0,0 +1,67 @@
+## Copyright (C) 2004 David Bateman
+##
+## This file is part of Octave.
+##
+## Octave is free software; you can redistribute it and/or modify it
+## under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2, or (at your option)
+## any later version.
+##
+## Octave is distributed in the hope that it will be useful, but
+## WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+## General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with Octave; see the file COPYING.  If not, write to the Free
+## Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+## 02111-1307, USA.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {} flipdim (@var{x}, @var{dim})
+## Return a copy of @var{x} flipped about the dimension @var{dim}.
+## For exmaple
+##
+## @example
+## @group
+## flipdim ([1, 2; 3, 4], 2)
+##      @result{}  2  1
+##          4  3
+## @end group
+## @end example
+## @end deftypefn
+## @seealso{fliplr, flipud, rot90 and rotdim}
+
+## Author: David Bateman
+
+function y = flipdim (x, dim)
+
+  if (nargin != 1 && nargin != 2)
+    usage ("flipdim (x, dim)");
+  endif
+
+  nd = ndims (x);
+  sz = size (x);
+  if (nargin == 1)
+    ## Find the first non-singleton dimension.
+    dim = 1;
+    while (dim < nd + 1 && sz(dim) == 1)
+      dim = dim + 1;
+    endwhile
+    if (dim > nd)
+      dim = 1;
+    endif
+  else
+    if (! (isscalar (dim) && dim == round (dim)) && dim > 0 && dim < (nd + 1))
+      error ("flipdim: dim must be an integer and valid dimension");
+    endif
+  endif
+
+  idx = cell ();
+  for i = 1:nd
+    idx{i} = 1:sz(i);
+  endfor
+  idx{dim} = sz(dim):-1:1;
+  y = x(idx{:});
+
+endfunction