001 /* =========================================================== 002 * JFreeChart : a free chart library for the Java(tm) platform 003 * =========================================================== 004 * 005 * (C) Copyright 2000-2006, by Object Refinery Limited and Contributors. 006 * 007 * Project Info: http://www.jfree.org/jfreechart/index.html 008 * 009 * This library is free software; you can redistribute it and/or modify it 010 * under the terms of the GNU Lesser General Public License as published by 011 * the Free Software Foundation; either version 2.1 of the License, or 012 * (at your option) any later version. 013 * 014 * This library is distributed in the hope that it will be useful, but 015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 017 * License for more details. 018 * 019 * You should have received a copy of the GNU Lesser General Public 020 * License along with this library; if not, write to the Free Software 021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 022 * USA. 023 * 024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 025 * in the United States and other countries.] 026 * 027 * ---------------------- 028 * YIntervalDataItem.java 029 * ---------------------- 030 * (C) Copyright 2006, by Object Refinery Limited. 031 * 032 * Original Author: David Gilbert (for Object Refinery Limited); 033 * Contributor(s): -; 034 * 035 * $Id: YIntervalDataItem.java,v 1.1.2.1 2006/10/20 15:23:22 mungady Exp $ 036 * 037 * Changes 038 * ------- 039 * 20-Oct-2006 : Version 1 (DG); 040 * 041 */ 042 043 package org.jfree.data.xy; 044 045 import org.jfree.data.ComparableObjectItem; 046 047 /** 048 * An item representing data in the form (x, y, y-low, y-high). 049 * 050 * @since 1.0.3 051 */ 052 public class YIntervalDataItem extends ComparableObjectItem { 053 054 /** 055 * Creates a new instance of <code>YIntervalItem</code>. 056 * 057 * @param x the x-value. 058 * @param y the y-value. 059 * @param yLow the lower bound of the y-interval. 060 * @param yHigh the upper bound of the y-interval. 061 */ 062 public YIntervalDataItem(double x, double y, double yLow, double yHigh) { 063 super(new Double(x), new YInterval(y, yLow, yHigh)); 064 } 065 066 /** 067 * Returns the x-value. 068 * 069 * @return The x-value (never <code>null</code>). 070 */ 071 public Double getX() { 072 return (Double) getComparable(); 073 } 074 075 /** 076 * Returns the y-value. 077 * 078 * @return The y-value. 079 */ 080 public double getYValue() { 081 YInterval interval = (YInterval) getObject(); 082 if (interval != null) { 083 return interval.getY(); 084 } 085 else { 086 return Double.NaN; 087 } 088 } 089 090 /** 091 * Returns the lower bound of the y-interval. 092 * 093 * @return The lower bound of the y-interval. 094 */ 095 public double getYLowValue() { 096 YInterval interval = (YInterval) getObject(); 097 if (interval != null) { 098 return interval.getYLow(); 099 } 100 else { 101 return Double.NaN; 102 } 103 } 104 105 /** 106 * Returns the upper bound of the y-interval. 107 * 108 * @return The upper bound of the y-interval. 109 */ 110 public double getYHighValue() { 111 YInterval interval = (YInterval) getObject(); 112 if (interval != null) { 113 return interval.getYHigh(); 114 } 115 else { 116 return Double.NaN; 117 } 118 } 119 120 }