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git-svn-id: http://moon:8086/svn/matlab/trunk@99 801c6759-fa7c-4059-a304-17956f83a07c

common/psample.m

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+## Copyright (C) 2017 Jens Ahrensfeld
+## 
+## 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 3 of the License, 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 program.  If not, see <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*- 
+## @deftypefn {Function File} {@var{retval} =} psample (@var{input1}, @var{input2})
+##
+## @seealso{}
+## @end deftypefn
+
+## Author: Jens Ahrensfeld <ahrensfeld@w2ess001vm>
+## Created: 2017-04-19
+
+function [h] = psample (N)
+P = [10 10 10 10];
+R = calcRange(P);
+
+h = zeros(1, length(P));
+
+for k=1:N,
+	ii = getSample(R);
+	h(ii) = h(ii) + 1/N;
+end
+
+function R = calcRange(P)
+P = P / sum(P)
+R0 = 0;
+for k=1:length(P)
+	R0 = R0 + P(k);
+	R(k) = R0;
+end
+
+function ii = getSample(R)
+Z = rand();
+cand = find(Z <= R);
+ii=cand(1);
+