001 /* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2008, 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 * XIntervalDataItem.java
029 * ----------------------
030 * (C) Copyright 2006-2008, by Object Refinery Limited.
031 *
032 * Original Author: David Gilbert (for Object Refinery Limited);
033 * Contributor(s): -;
034 *
035 * Changes
036 * -------
037 * 20-Oct-2006 : Version 1 (DG);
038 *
039 */
040
041 package org.jfree.data.xy;
042
043 import org.jfree.data.ComparableObjectItem;
044
045 /**
046 * An item representing data in the form (x, x-low, x-high, y).
047 *
048 * @since 1.0.3
049 */
050 public class XIntervalDataItem extends ComparableObjectItem {
051
052 /**
053 * Creates a new instance of <code>XIntervalDataItem</code>.
054 *
055 * @param x the x-value.
056 * @param xLow the lower bound of the x-interval.
057 * @param xHigh the upper bound of the x-interval.
058 * @param y the y-value.
059 */
060 public XIntervalDataItem(double x, double xLow, double xHigh, double y) {
061 super(new Double(x), new YWithXInterval(y, xLow, xHigh));
062 }
063
064 /**
065 * Returns the x-value.
066 *
067 * @return The x-value (never <code>null</code>).
068 */
069 public Number getX() {
070 return (Number) getComparable();
071 }
072
073 /**
074 * Returns the y-value.
075 *
076 * @return The y-value.
077 */
078 public double getYValue() {
079 YWithXInterval interval = (YWithXInterval) getObject();
080 if (interval != null) {
081 return interval.getY();
082 }
083 else {
084 return Double.NaN;
085 }
086 }
087
088 /**
089 * Returns the lower bound of the x-interval.
090 *
091 * @return The lower bound of the x-interval.
092 */
093 public double getXLowValue() {
094 YWithXInterval interval = (YWithXInterval) getObject();
095 if (interval != null) {
096 return interval.getXLow();
097 }
098 else {
099 return Double.NaN;
100 }
101 }
102
103 /**
104 * Returns the upper bound of the x-interval.
105 *
106 * @return The upper bound of the x-interval.
107 */
108 public double getXHighValue() {
109 YWithXInterval interval = (YWithXInterval) getObject();
110 if (interval != null) {
111 return interval.getXHigh();
112 }
113 else {
114 return Double.NaN;
115 }
116 }
117
118 }