defaultboxandwhiskercategorydataset.java

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/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2005, 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
 * in the United States and other countries.]
 *
 * ----------------------------------------
 * DefaultBoxAndWhiskerCategoryDataset.java
 * ----------------------------------------
 * (C) Copyright 2003-2005, by David Browning and Contributors.
 *
 * Original Author:  David Browning (for Australian Institute of Marine 
 *                   Science);
 * Contributor(s):   David Gilbert (for Object Refinery Limited);
 *
 * $Id: DefaultBoxAndWhiskerCategoryDataset.java,v 1.9 2005/05/20 08:58:08 mungady Exp $
 *
 * Changes
 * -------
 * 05-Aug-2003 : Version 1, contributed by David Browning (DG);
 * 27-Aug-2003 : Moved from org.jfree.data --> org.jfree.data.statistics (DG);
 * 12-Nov-2003 : Changed 'data' from private to protected and added a new 'add' 
 *               method as proposed by Tim Bardzil.  Also removed old code (DG);
 * 01-Mar-2004 : Added equals() method (DG);
 * 18-Nov-2004 : Updates for changes in RangeInfo interface (DG);
 * 11-Jan-2005 : Removed deprecated code in preparation for the 1.0.0 
 *               release (DG);
 *
 */

package org.jfree.data.statistics;

import java.util.List;

import org.jfree.data.KeyedObjects2D;
import org.jfree.data.Range;
import org.jfree.data.RangeInfo;
import org.jfree.data.general.AbstractDataset;
import org.jfree.util.ObjectUtilities;

/**
 * A convenience class that provides a default implementation of the
 * {@link BoxAndWhiskerCategoryDataset} interface.
 *
 * @author David Browning (for Australian Institute of Marine Science)
 */
public class DefaultBoxAndWhiskerCategoryDataset extends AbstractDataset
    implements BoxAndWhiskerCategoryDataset, RangeInfo {

    /** Storage for the data. */
    protected KeyedObjects2D data;

    /** The minimum range value. */
    private Number minimumRangeValue;

    /** The maximum range value. */
    private Number maximumRangeValue;

    /** The range of values. */
    private Range rangeBounds;

    /**
     * Creates a new dataset.
     */
    public DefaultBoxAndWhiskerCategoryDataset() {
        this.data = new KeyedObjects2D();
        this.minimumRangeValue = null;
        this.maximumRangeValue = null;
        this.rangeBounds = new Range(0.0, 0.0);
    }

    /**
     * Adds a list of values relating to one box-and-whisker entity to the 
     * table.  The various median values are calculated.
     *
     * @param list  a collection of values from which the various medians will 
     *              be calculated.
     * @param rowKey  the row key.
     * @param columnKey  the column key.
     */
    public void add(List list, Comparable rowKey, Comparable columnKey) {
        BoxAndWhiskerItem item 
            = BoxAndWhiskerCalculator.calculateBoxAndWhiskerStatistics(list);
        add(item, rowKey, columnKey);
    }
    
    /**
     * Adds a list of values relating to one Box and Whisker entity to the 
     * table.  The various median values are calculated.
     *
     * @param item  a box and whisker item.
     * @param rowKey  the row key.
     * @param columnKey  the column key.
     */
    public void add(BoxAndWhiskerItem item, 
                    Comparable rowKey, 
                    Comparable columnKey) {

        this.data.addObject(item, rowKey, columnKey);
        double minval = item.getMinOutlier().doubleValue();
        double maxval = item.getMaxOutlier().doubleValue();
        
        if (this.maximumRangeValue == null) {
            this.maximumRangeValue = new Double(maxval);
        }
        else if (maxval > this.maximumRangeValue.doubleValue()) {
            this.maximumRangeValue = new Double(maxval);
        }
        
        if (this.minimumRangeValue == null) {
            this.minimumRangeValue = new Double(minval);
        }
        else if (minval < this.minimumRangeValue.doubleValue()) {
            this.minimumRangeValue = new Double(minval);
        }
        
        this.rangeBounds = new Range(
            this.minimumRangeValue.doubleValue(),
            this.maximumRangeValue.doubleValue()
        );

        fireDatasetChanged();

    }

    /**
     * Return an item from within the dataset.
     * 
     * @param row  the row index.
     * @param column  the column index.
     * 
     * @return The item.
     */
    public BoxAndWhiskerItem getItem(int row, int column) {
        return (BoxAndWhiskerItem) this.data.getObject(row, column);  
    }

    /**
     * Returns the value for an item.
     *
     * @param row  the row index.
     * @param column  the column index.
     *
     * @return The value.
     */
    public Number getValue(int row, int column) {
        return getMedianValue(row, column);
    }

    /**
     * Returns the value for an item.
     *
     * @param rowKey  the row key.
     * @param columnKey  the columnKey.
     *
     * @return The value.
     */
    public Number getValue(Comparable rowKey, Comparable columnKey) {
        return getMedianValue(rowKey, columnKey);
    }

    /**
     * Returns the mean value for an item.
     * 
     * @param row  the row index (zero-based).
     * @param column  the column index (zero-based).
     * 
     * @return The mean value.
     */
    public Number getMeanValue(int row, int column) {

        Number result = null;
        BoxAndWhiskerItem item = (BoxAndWhiskerItem) this.data.getObject(
            row, column
        );
        if (item != null) {
            result = item.getMean();
        }
        return result;

    }

    /**
     * Returns the mean value for an item.
     * 
     * @param rowKey  the row key.
     * @param columnKey  the column key.
     * 
     * @return The mean value.
     */
    public Number getMeanValue(Comparable rowKey, Comparable columnKey) {

        Number result = null;
        BoxAndWhiskerItem item = (BoxAndWhiskerItem) this.data.getObject(
            rowKey, columnKey
        );
        if (item != null) {
            result = item.getMean();
        }
        return result;

    }

    /**
     * Returns the median value for an item.
     *
     * @param row  the row index (zero-based).
     * @param column  the column index (zero-based).
     *
     * @return The median value.
     */
    public Number getMedianValue(int row, int column) {
        Number result = null;
        BoxAndWhiskerItem item = (BoxAndWhiskerItem) this.data.getObject(
            row, column
        );
        if (item != null) {
            result = item.getMedian();
        }
        return result;
    }

    /**
     * Returns the median value for an item.
     *
     * @param rowKey  the row key.
     * @param columnKey  the columnKey.
     *
     * @return The median value.
     */
    public Number getMedianValue(Comparable rowKey, Comparable columnKey) {
        Number result = null;
        BoxAndWhiskerItem item = (BoxAndWhiskerItem) this.data.getObject(
            rowKey, columnKey
        );
        if (item != null) {
            result = item.getMedian();
        }
        return result;
    }

    /**
     * Returns the first quartile value.
     * 
     * @param row  the row index (zero-based).
     * @param column  the column index (zero-based).
     * 
     * @return The first quartile value.
     */
    public Number getQ1Value(int row, int column) {
        Number result = null;
        BoxAndWhiskerItem item = (BoxAndWhiskerItem) this.data.getObject(
            row, column
        );
        if (item != null) {
            result = item.getQ1();
        }
        return result;
    }

    /**
     * Returns the first quartile value.
     * 
     * @param rowKey  the row key.
     * @param columnKey  the column key.
     * 
     * @return The first quartile value.
     */
    public Number getQ1Value(Comparable rowKey, Comparable columnKey) {
        Number result = null;
        BoxAndWhiskerItem item = (BoxAndWhiskerItem) this.data.getObject(
            rowKey, columnKey
        );
        if (item != null) {
            result = item.getQ1();
        }
        return result;
    }

    /**
     * Returns the third quartile value.
     * 
     * @param row  the row index (zero-based).
     * @param column  the column index (zero-based).
     * 
     * @return The third quartile value.
     */
    public Number getQ3Value(int row, int column) {
        Number result = null;
        BoxAndWhiskerItem item = (BoxAndWhiskerItem) this.data.getObject(
            row, column
        );
        if (item != null) {
            result = item.getQ3();
        }
        return result;
    }

    /**
     * Returns the third quartile value.
     * 
     * @param rowKey  the row key.
     * @param columnKey  the column key.
     * 
     * @return The third quartile value.
     */
    public Number getQ3Value(Comparable rowKey, Comparable columnKey) {
        Number result = null;
        BoxAndWhiskerItem item = (BoxAndWhiskerItem) this.data.getObject(
            rowKey, columnKey
        );
        if (item != null) {
            result = item.getQ3();
        }
        return result;
    }

    /**
     * Returns the column index for a given key.
     *
     * @param key  the column key.
     *
     * @return The column index.
     */
    public int getColumnIndex(Comparable key) {
        return this.data.getColumnIndex(key);
    }

    /**
     * Returns a column key.