Mercurial > octave-nkf
view scripts/statistics/base/cor.m @ 12656:6b2f14af2360
Overhaul functions in statistics/base directory.
Widen input validation to accept logicals.
Return correct class of output, e.g., 'single' depending on class of input.
Correct or add tests for above.
* center.m, cov.m, kendall.m, mean.m, meansq.m, median.m, mode.m, prctile.m,
quantile.m, ranks.m, run_count.m, runlength.m, spearman.m, statistics.m,
std.m, var.m, logistic_inv.m: Overhaul as described above
* corrcoef.m: Overhaul + remove input validation already done by cov().
* cor.m, logit.m, ppplot.m, table.m: Only align test blocks.
* gls.m, ols.m: Only correct class of output, no logical inputs for regression.
* histc.m: Only change spacing of code to be uniform.
* iqr.m: Overhaul + 2X speedup by calling empirical_inv just once.
* kurtosis.m: Overhaul + replace repmat instances with center().
* mahalanobis.m: Overhaul + use bsxfun for centering data.
* moment.m: Overhaul + replace repmat instances with center().
* probit.m, range.m: Redo input validation and add tests.
* skewness.m: Overhaul + replace repmat instances with center().
* zscore.m: Overhaul + replace repmat instances with center() + use bsxfun.
author | Rik <octave@nomad.inbox5.com> |
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date | Sat, 07 May 2011 14:52:08 -0700 |
parents | 4715ce9f911d |
children |
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## Copyright (C) 1995-2011 Kurt Hornik ## ## 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 ## <http://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {Function File} {} cor (@var{x}) ## @deftypefnx {Function File} {} cor (@var{x}, @var{y}) ## Compute matrix of correlation coefficients. ## ## This is an alias for @code{corrcoef}. ## @seealso{corrcoef} ## @end deftypefn function retval = cor (x, y = x) if (nargin < 1 || nargin > 2) print_usage (); endif retval = corrcoef (x, y); endfunction %!test %! x = rand (10, 2); %! assert (cor (x), corrcoef (x), 5*eps); %! assert (cor (x(:,1), x(:,2)) == corrcoef (x(:,1), x(:,2))); %% Test input validation %!error corrcoef (); %!error corrcoef (1, 2, 3);