X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?p=CreaPhase.git;a=blobdiff_plain;f=octave_packages%2Fm%2Fdeprecated%2Fcut.m;fp=octave_packages%2Fm%2Fdeprecated%2Fcut.m;h=440907043ae4b1f5f006488bdbfc04ac0039988f;hp=0000000000000000000000000000000000000000;hb=1c0469ada9531828709108a4882a751d2816994a;hpb=63de9f36673d49121015e3695f2c336ea92bc278
diff --git a/octave_packages/m/deprecated/cut.m b/octave_packages/m/deprecated/cut.m
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+## Copyright (C) 1996-2012 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
+## .
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {} cut (@var{x}, @var{breaks})
+## Create categorical data from numerical or continuous data by
+## cutting into intervals.
+##
+## If @var{breaks} is a scalar, the data is cut into that many
+## equal-width intervals. If @var{breaks} is a vector of break points,
+## the category has @code{length (@var{breaks}) - 1} groups.
+##
+## The returned value is a vector of the same size as @var{x} telling
+## which group each point in @var{x} belongs to. Groups are labelled
+## from 1 to the number of groups; points outside the range of
+## @var{breaks} are labelled by @code{NaN}.
+## @seealso{histc}
+## @end deftypefn
+
+## Author: KH
+## Description: Cut data into intervals
+
+function group = cut (x, breaks)
+
+ persistent warned = false;
+ if (! warned)
+ warned = true;
+ warning ("Octave:deprecated-function",
+ "cut is obsolete and will be removed from a future version of Octave; please use histc instead");
+ endif
+
+ if (nargin != 2)
+ print_usage ();
+ endif
+
+ if (!isvector (x))
+ error ("cut: X must be a vector");
+ endif
+ if isscalar (breaks)
+ breaks = linspace (min (x), max (x), breaks + 1);
+ breaks(1) = breaks(1) - 1;
+ elseif isvector (breaks)
+ breaks = sort (breaks);
+ else
+ error ("cut: BREAKS must be a scalar or vector");
+ endif
+
+ group = NaN (size (x));
+ m = length (breaks);
+ if any (k = find ((x >= min (breaks)) & (x < max (breaks))))
+ n = length (k);
+ group(k) = sum ((ones (m, 1) * reshape (x(k), 1, n))
+ >= (reshape (breaks, m, 1) * ones (1, n)));
+ endif
+
+endfunction