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,
063: double y) {
064: super (new Double(x), new YWithXInterval(y, xLow, xHigh));
065: }
066:
067: /**
068: * Returns the x-value.
069: *
070: * @return The x-value (never <code>null</code>).
071: */
072: public Number getX() {
073: return (Number) getComparable();
074: }
075:
076: /**
077: * Returns the y-value.
078: *
079: * @return The y-value.
080: */
081: public double getYValue() {
082: YWithXInterval interval = (YWithXInterval) getObject();
083: if (interval != null) {
084: return interval.getY();
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: } else {
100: return Double.NaN;
101: }
102: }
103:
104: /**
105: * Returns the upper bound of the x-interval.
106: *
107: * @return The upper bound of the x-interval.
108: */
109: public double getXHighValue() {
110: YWithXInterval interval = (YWithXInterval) getObject();
111: if (interval != null) {
112: return interval.getXHigh();
113: } else {
114: return Double.NaN;
115: }
116: }
117:
118: }
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