Mercurial > octave
view scripts/statistics/range.m @ 24584:7a18e02a516e
mad.m: New function to calculate mean or median absolute deviation.
* scripts/statistics/mad.m: New function.
* scripts/statistics/module.mk: Add mad.m to build system.
* NEWS: Announce new function.
* stats.txi: Add function to manual.
* bounds.m, iqr.m, range.m, std.m: Add seealso links to mad.
author | Rik <rik@octave.org> |
---|---|
date | Wed, 10 Jan 2018 16:09:53 -0800 |
parents | b7047fe47123 |
children | 6652d3823428 |
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## Copyright (C) 1995-2017 Kurt Hornik ## Copyright (C) 2009 Jaroslav Hajek ## ## 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 {} {} range (@var{x}) ## @deftypefnx {} {} range (@var{x}, @var{dim}) ## Return the range, i.e., the difference between the maximum and the minimum ## of the input data. ## ## If @var{x} is a vector, the range is calculated over the elements of ## @var{x}. If @var{x} is a matrix, the range is calculated over each column ## of @var{x}. ## ## If the optional argument @var{dim} is given, operate along this dimension. ## ## The range is a quickly computed measure of the dispersion of a data set, but ## is less accurate than @code{iqr} if there are outlying data points. ## @seealso{bounds, iqr, mad, std} ## @end deftypefn ## Author: KH <Kurt.Hornik@wu-wien.ac.at> ## Description: Compute range function y = range (x, dim) if (nargin < 1 || nargin > 2) print_usage (); endif if (nargin == 1) y = max (x) - min (x); else y = max (x, [], dim) - min (x, [], dim); endif endfunction %!assert (range (1:10), 9) %!assert (range (single (1:10)), single (9)) %!assert (range (magic (3)), [5, 8, 5]) %!assert (range (magic (3), 2), [7; 4; 7]) %!assert (range (2), 0) ## Test input validation %!error range () %!error range (1, 2, 3)