Mercurial > octave
view scripts/general/fliplr.m @ 31221:f5755dbacd8d
maint: merge stable to default
author | Pantxo Diribarne <pantxo.diribarne@gmail.com> |
---|---|
date | Wed, 31 Aug 2022 22:04:02 +0200 |
parents | 5d3faba0342e |
children | 597f3ee61a48 |
line wrap: on
line source
######################################################################## ## ## Copyright (C) 1993-2022 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this ## distribution or <https://octave.org/copyright/>. ## ## 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 {} {@var{B} =} fliplr (@var{A}) ## Flip array left to right. ## ## Return a copy of @var{A} with the order of the columns reversed. In other ## words, @var{A} is flipped left-to-right about a vertical axis. For example: ## ## @example ## @group ## fliplr ([1, 2; 3, 4]) ## @result{} 2 1 ## 4 3 ## @end group ## @end example ## ## @seealso{flipud, flip, rot90, rotdim} ## @end deftypefn function B = fliplr (A) if (nargin < 1) print_usage (); endif B = flip (A, 2); endfunction %!assert (fliplr ([1, 2; 3, 4]), [2, 1; 4, 3]) %!assert (fliplr ([1, 2; 3, 4; 5, 6]), [2, 1; 4, 3; 6, 5]) %!assert (fliplr ([1, 2, 3; 4, 5, 6]), [3, 2, 1; 6, 5, 4]) %!assert (fliplr ([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) = [ 2 1; 4 3; 6 5]; %! b(:,:,2) = [ 8 7; 10 9; 12 11]; %! assert (fliplr (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) = [ 2 1; 4 3; 6 5]; %! b(:,:,:,2) = [ 8 7; 10 9; 12 11]; %! assert (fliplr (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 (fliplr (a), a); ## Test input validation %!error <Invalid call> fliplr ()