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jfreechart example source code file (Outlier.java)

This example jfreechart source code file (Outlier.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - jfreechart tags/keywords

awt, comparable, comparable, geometry, outlier, outlier, point2d, point2d, string, string

The jfreechart Outlier.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * This library 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 2.1 of the License, or
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY 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 this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * ------------
 * Outlier.java
 * ------------
 * (C) Copyright 2003-2008, by David Browning and Contributors.
 *
 * Original Author:  David Browning (for Australian Institute of Marine
 *                   Science);
 * Contributor(s):   David Gilbert (for Object Refinery Limited);
 *
 * Changes
 * -------
 * 05-Aug-2003 : Version 1, contributed by David Browning (DG);
 * 28-Aug-2003 : Minor tidy-up (DG);
 * ------------- JFREECHART 1.0.x ---------------------------------------------
 * 02-Feb-2007 : Removed author tags from all over JFreeChart sources (DG);
 * 21-Nov-2007 : Implemented equals() to shut up FindBugs (DG);
 *
 */

package org.jfree.chart.renderer;

import java.awt.geom.Point2D;

/**
 * Represents one outlier in the box and whisker plot.
 * <P>
 * All the coordinates in this class are in Java2D space.
 */
public class Outlier implements Comparable {

    /**
     * The xy coordinates of the bounding box containing the outlier ellipse.
     */
    private Point2D point;

    /** The radius of the ellipse */
    private double radius;

    /**
     * Constructs an outlier item consisting of a point and the radius of the
     * outlier ellipse
     *
     * @param xCoord  the x coordinate of the point.
     * @param yCoord  the y coordinate of the point.
     * @param radius  the radius of the ellipse.
     */
    public Outlier(double xCoord, double yCoord, double radius) {
        this.point = new Point2D.Double(xCoord - radius, yCoord - radius);
        this.radius = radius;
    }

    /**
     * Returns the xy coordinates of the bounding box containing the outlier
     * ellipse.
     *
     * @return The location of the outlier ellipse.
     */
    public Point2D getPoint() {
        return this.point;
    }

    /**
     * Sets the xy coordinates of the bounding box containing the outlier
     * ellipse.
     *
     * @param point  the location.
     */
    public void setPoint(Point2D point) {
        this.point = point;
    }

    /**
     * Returns the x coordinate of the bounding box containing the outlier
     * ellipse.
     *
     * @return The x coordinate.
     */
    public double getX() {
        return getPoint().getX();
    }

    /**
     * Returns the y coordinate of the bounding box containing the outlier
     * ellipse.
     *
     * @return The y coordinate.
     */
    public double getY() {
        return getPoint().getY();
    }

    /**
     * Returns the radius of the outlier ellipse.
     *
     * @return The radius.
     */
    public double getRadius() {
        return this.radius;
    }

    /**
     * Sets the radius of the outlier ellipse.
     *
     * @param radius  the new radius.
     */
    public void setRadius(double radius) {
        this.radius = radius;
    }

    /**
     * Compares this object with the specified object for order, based on
     * the outlier's point.
     *
     * @param   o the Object to be compared.
     * @return A negative integer, zero, or a positive integer as this object
     *      is less than, equal to, or greater than the specified object.
     *
     */
    public int compareTo(Object o) {
        Outlier outlier = (Outlier) o;
        Point2D p1 = getPoint();
        Point2D p2 = outlier.getPoint();
        if (p1.equals(p2)) {
            return 0;
        }
        else if ((p1.getX() < p2.getX()) || (p1.getY() < p2.getY())) {
            return -1;
        }
        else {
            return 1;
        }
    }

    /**
     * Returns a true if outlier is overlapped and false if it is not.
     * Overlapping is determined by the respective bounding boxes plus
     * a small margin.
     *
     * @param other  the other outlier.
     *
     * @return A <code>boolean indicating whether or not an overlap has
     *         occurred.
     */
    public boolean overlaps(Outlier other) {
        return ((other.getX() >= getX() - (this.radius * 1.1))
                && (other.getX() <= getX() + (this.radius * 1.1))
                && (other.getY() >= getY() - (this.radius * 1.1))
                && (other.getY() <= getY() + (this.radius * 1.1)));
    }

    /**
     * Tests this outlier for equality with an arbitrary object.
     *
     * @param obj  the object (<code>null permitted).
     *
     * @return A boolean.
     */
    public boolean equals(Object obj) {
        if (obj == this) {
            return true;
        }
        if (!(obj instanceof Outlier)) {
            return false;
        }
        Outlier that = (Outlier) obj;
        if (!this.point.equals(that.point)) {
            return false;
        }
        if (this.radius != that.radius) {
            return false;
        }
        return true;
    }

    /**
     * Returns a textual representation of the outlier.
     *
     * @return A <code>String representing the outlier.
     */
    public String toString() {
        return "{" + getX() + "," + getY() + "}";
    }

}

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