Mercurial > octave
view scripts/general/flipud.m @ 27919:1891570abac8
update Octave Project Developers copyright for the new year
In files that have the "Octave Project Developers" copyright notice,
update for 2020.
author | John W. Eaton <jwe@octave.org> |
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date | Mon, 06 Jan 2020 22:29:51 -0500 |
parents | b442ec6dda5c |
children | bd51beb6205e |
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## Copyright (C) 1993-2020 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this distribution ## or <https://octave.org/COPYRIGHT.html/>. ## ## ## 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 3 of the License, 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, see ## <https://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {} {} flipud (@var{x}) ## Flip array upside down. ## ## Return a copy of @var{x} with the order of the rows reversed. In other ## words, @var{x} is flipped upside-down about a horizontal axis. For example: ## ## @example ## @group ## flipud ([1, 2; 3, 4]) ## @result{} 3 4 ## 1 2 ## @end group ## @end example ## ## @seealso{fliplr, flip, rot90, rotdim} ## @end deftypefn function y = flipud (x) if (nargin != 1) print_usage (); endif y = flip (x, 1); endfunction %!assert (flipud ([1, 2; 3, 4]), [3, 4; 1, 2]) %!assert (flipud ([1, 2; 3, 4; 5, 6]), [5, 6; 3, 4; 1, 2]) %!assert (flipud ([1, 2, 3; 4, 5, 6]), [4, 5, 6; 1, 2, 3]) %!assert (flipud ([1 2 3]), [1 2 3]) ## Test NDArrays %!test %! a(:,:,1) = [ 1 2 3; 4 5 6]; %! a(:,:,2) = [ 7 8 9; 10 11 12]; %! b(:,:,1) = [ 4 5 6; 1 2 3]; %! b(:,:,2) = [10 11 12; 7 8 9]; %! assert (flipud (a), b); ## Test NDArray with singleton dimensions %!test %! a(:,:,:,1) = [ 1 2 3; 4 5 6]; %! a(:,:,:,2) = [ 7 8 9; 10 11 12]; %! b(:,:,:,1) = [ 4 5 6; 1 2 3]; %! b(:,:,:,2) = [10 11 12; 7 8 9]; %! assert (flipud (a), b); ## Test for 1 row, i.e., returns the same %!test %! a(1,:,:,1) = [ 1 2 3 4]; %! a(1,:,:,2) = [ 5 6 7 8]; %! assert (flipud (a), a); %!error flipud () %!error flipud (1, 2)