001 /* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2007, 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, 2007, by Object Refinery Limited.
031 *
032 * Original Author: David Gilbert (for Object Refinery Limited);
033 * Contributor(s): -;
034 *
035 * $Id: XIntervalDataItem.java,v 1.1.2.2 2007/02/02 11:01:09 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, x-low, x-high, y).
049 *
050 * @since 1.0.3
051 */
052 public class XIntervalDataItem extends ComparableObjectItem {
053
054 /**
055 * Creates a new instance of <code>XIntervalDataItem</code>.
056 *
057 * @param x the x-value.
058 * @param xLow the lower bound of the x-interval.
059 * @param xHigh the upper bound of the x-interval.
060 * @param y the y-value.
061 */
062 public XIntervalDataItem(double x, double xLow, double xHigh, double y) {
063 super(new Double(x), new YWithXInterval(y, xLow, xHigh));
064 }
065
066 /**
067 * Returns the x-value.
068 *
069 * @return The x-value (never <code>null</code>).
070 */
071 public Number getX() {
072 return (Number) getComparable();
073 }
074
075 /**
076 * Returns the y-value.
077 *
078 * @return The y-value.
079 */
080 public double getYValue() {
081 YWithXInterval interval = (YWithXInterval) 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 x-interval.
092 *
093 * @return The lower bound of the x-interval.
094 */
095 public double getXLowValue() {
096 YWithXInterval interval = (YWithXInterval) getObject();
097 if (interval != null) {
098 return interval.getXLow();
099 }
100 else {
101 return Double.NaN;
102 }
103 }
104
105 /**
106 * Returns the upper bound of the x-interval.
107 *
108 * @return The upper bound of the x-interval.
109 */
110 public double getXHighValue() {
111 YWithXInterval interval = (YWithXInterval) getObject();
112 if (interval != null) {
113 return interval.getXHigh();
114 }
115 else {
116 return Double.NaN;
117 }
118 }
119
120 }