update packages

[CreaPhase.git] / octave_packages / m / deprecated / values.m

diff --git a/octave_packages/m/deprecated/values.m b/octave_packages/m/deprecated/values.m
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+## Copyright (C) 1995-2012 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} {} values (@var{x})
+## Return the different values in a column vector, arranged in ascending
+## order.
+##
+## As an example, @code{values([1, 2, 3, 1])} returns the vector
+## @code{[1, 2, 3]}.
+## @end deftypefn
+
+## Author: KH <Kurt.Hornik@wu-wien.ac.at>
+## Description: Extract unique elements
+
+## Deprecated in version 3.4
+
+function v = values (x)
+
+  persistent warned = false;
+  if (! warned)
+    warned = true;
+    warning ("Octave:deprecated-function",
+             "values is obsolete and will be removed from a future version of Octave; please use unique instead");
+  endif
+
+  if (nargin != 1)
+    print_usage ();
+  endif
+
+  if (! (isvector (x)))
+    error ("values: X must be a vector");
+  endif
+
+  i = any (isnan (x));
+  ## HACK!
+  x = x(find(!isnan (x)));
+  n = length (x);
+  x = reshape (x, n, 1);
+  s = sort (x);
+  v = s([1; (find (s(2:n) > s(1:n-1)) + 1)]);
+  if (i)
+    v = [v; NaN];
+  endif
+
+endfunction