#lang racket/gui ;;; Science Collection ;;; discrete-graphics.rkt ;;; Copyright (c) 2004-2011 M. Douglas Williams ;;; ;;; This file is part of the Science Collection. ;;; ;;; The Science Collection 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 3 of the License ;;; or (at your option) any later version. ;;; ;;; The Science Collection is distributed in the hope that it will be useful, ;;; but WITHOUT 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 the Science Collection. If not, see ;;; <http://www.gnu.org/licenses/>. ;;; ;;; ------------------------------------------------------------------- ;;; ;;; This module implements the graphics for the Bernoulli distribution. ;;; ;;; Version Date Description ;;; 1.0.0 09/28/04 Added contracts for functions. Marked as ready ;;; for Release 1.0. (Doug Williams) ;;; 2.0.0 11/19/07 Changed calls to unchecked versions. ;;; (Doug Williams) ;;; 3.0.0 06/09/08 Changes required for V4.0. (Doug Williams) ;;; 3.0.1 07/01/08 Changed x axis label. (Doug Williams) ;;; 4.0.0 08/16/11 Changed the header and restructured the code. (MDW) ;;; 4.1.0 10/09/11 Updated to new plot package. (MDW) (require plot "discrete.rkt") (define (discrete-plot d) (let* ((n (discrete-n d)) (rects1 (for/list ((i (in-range n))) (vector i (discrete-pdf d i)))) (rects2 (for/list ((i (in-range n))) (vector i (discrete-cdf d i))))) (plot (list (discrete-histogram rects2 #:label "y = cdf(x)" #:color 3 #:alpha 0.5) (discrete-histogram rects1 #:label "y = pdf(x)" #:color 1 #:alpha 0.5)) #:x-label "x" #:y-label "Density" #:title "Discrete Distribution"))) ;;; Module Contracts (provide/contract (discrete-plot (-> discrete? (or/c (is-a?/c image-snip%) void?))))