#lang scheme ;;; PLT Scheme Science Collection ;;; chi-squared-histogram-example.ss ;;; Copyright (c) 2004-2008 M. Douglas Williams ;;; ;;; This library is free software; you can redistribute it and/or ;;; modify it under the terms of the GNU Lesser General Public ;;; License as published by the Free Software Foundation; either ;;; version 2.1 of the License, or (at your option) any later version. ;;; ;;; This library 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 ;;; Lesser General Public License for more details. ;;; ;;; You should have received a copy of the GNU Lesser General Public ;;; License along with this library; if not, write to the Free ;;; Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA ;;; 02111-1307 USA. ;;; ;;; ------------------------------------------------------------------- ;;; (require (planet "chi-squared.ss" ("williams" "science.plt") "random-distributions")) (require (planet "histogram-with-graphics.ss" ("williams" "science.plt"))) (let ((h (make-histogram-with-ranges-uniform 40 0.0 10.0))) (do ((i 0 (+ i 1))) ((= i 10000) (void)) (histogram-increment! h (random-chi-squared 3.0))) (histogram-plot h "Histogram of the Chi Squared Distribution"))