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- ## Copyright (C) 1995, 1996, 1997 Friedrich Leisch
- ##
- ## This program 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 2, or (at your option)
- ## any later version.
- ##
- ## This program 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 this file. If not, write to the Free Software Foundation,
- ## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- ## usage: run_count (x, n)
- ##
- ## Counts the upward runs in the columns of x of length 1, 2, ... n-1
- ## and >= n.
-
- ## Author: FL <Friedrich.Leisch@ci.tuwien.ac.at>
- ## Description: Count upward runs
-
- function retval = run_count (x, n)
-
- [xr, xc] = size(x);
-
- tmp = zeros (xr,xc);
- retval = zeros (n, xc);
-
- for j = 1 : xc
- run = 1;
- count = 1;
-
- for k = 2 : xr
-
- if x(k, j) < x(k-1, j)
- tmp(run, j) = count;
- run = run + 1;
- count = 0;
- endif
-
- count = count + 1;
-
- endfor
-
- tmp(run, j) = count;
-
- endfor
-
- for k=1 : (n-1)
- retval(k, :) = sum (tmp == k);
- endfor
- retval(n, :) = sum (tmp >= n);
-
- endfunction
-