Java tutorial
/* =========================================================== * JFreeChart : a free chart library for the Java(tm) platform * =========================================================== * * (C) Copyright 2000-2013, 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. * * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. * Other names may be trademarks of their respective owners.] * * ---------------------------------------- * DefaultBoxAndWhiskerCategoryDataset.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); * 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); * ------------- JFREECHART 1.0.x --------------------------------------------- * 02-Feb-2007 : Removed author tags from all over JFreeChart sources (DG); * 17-Apr-2007 : Fixed bug 1701822 (DG); * 13-Jun-2007 : Fixed error in previous patch (DG); * 28-Sep-2007 : Fixed cloning bug (DG); * 02-Oct-2007 : Fixed bug in updating cached bounds (DG); * 03-Oct-2007 : Fixed another bug in updating cached bounds, added removal * methods (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.data.general.DatasetChangeEvent; import org.jfree.util.ObjectUtilities; import org.jfree.util.PublicCloneable; /** * A convenience class that provides a default implementation of the * {@link BoxAndWhiskerCategoryDataset} interface. */ public class DefaultBoxAndWhiskerCategoryDataset extends AbstractDataset implements BoxAndWhiskerCategoryDataset, RangeInfo, PublicCloneable { /** Storage for the data. */ protected KeyedObjects2D data; /** The minimum range value. */ private double minimumRangeValue; /** The row index for the cell that the minimum range value comes from. */ private int minimumRangeValueRow; /** * The column index for the cell that the minimum range value comes from. */ private int minimumRangeValueColumn; /** The maximum range value. */ private double maximumRangeValue; /** The row index for the cell that the maximum range value comes from. */ private int maximumRangeValueRow; /** * The column index for the cell that the maximum range value comes from. */ private int maximumRangeValueColumn; /** * Creates a new dataset. */ public DefaultBoxAndWhiskerCategoryDataset() { this.data = new KeyedObjects2D(); this.minimumRangeValue = Double.NaN; this.minimumRangeValueRow = -1; this.minimumRangeValueColumn = -1; this.maximumRangeValue = Double.NaN; this.maximumRangeValueRow = -1; this.maximumRangeValueColumn = -1; } /** * 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 (<code>null</code> not permitted). * @param columnKey the column key (<code>null</code> not permitted). * * @see #add(BoxAndWhiskerItem, Comparable, Comparable) */ 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 (<code>null</code> not permitted). * @param rowKey the row key (<code>null</code> not permitted). * @param columnKey the column key (<code>null</code> not permitted). * * @see #add(List, Comparable, Comparable) */ public void add(BoxAndWhiskerItem item, Comparable rowKey, Comparable columnKey) { this.data.addObject(item, rowKey, columnKey); // update cached min and max values int r = this.data.getRowIndex(rowKey); int c = this.data.getColumnIndex(columnKey); if ((this.maximumRangeValueRow == r && this.maximumRangeValueColumn == c) || (this.minimumRangeValueRow == r && this.minimumRangeValueColumn == c)) { updateBounds(); } else { double minval = Double.NaN; if (item.getMinOutlier() != null) { minval = item.getMinOutlier().doubleValue(); } double maxval = Double.NaN; if (item.getMaxOutlier() != null) { maxval = item.getMaxOutlier().doubleValue(); } if (Double.isNaN(this.maximumRangeValue)) { this.maximumRangeValue = maxval; this.maximumRangeValueRow = r; this.maximumRangeValueColumn = c; } else if (maxval > this.maximumRangeValue) { this.maximumRangeValue = maxval; this.maximumRangeValueRow = r; this.maximumRangeValueColumn = c; } if (Double.isNaN(this.minimumRangeValue)) { this.minimumRangeValue = minval; this.minimumRangeValueRow = r; this.minimumRangeValueColumn = c; } else if (minval < this.minimumRangeValue) { this.minimumRangeValue = minval; this.minimumRangeValueRow = r; this.minimumRangeValueColumn = c; } } fireDatasetChanged(); } /** * Removes an item from the dataset and sends a {@link DatasetChangeEvent} * to all registered listeners. * * @param rowKey the row key (<code>null</code> not permitted). * @param columnKey the column key (<code>null</code> not permitted). * * @see #add(BoxAndWhiskerItem, Comparable, Comparable) * * @since 1.0.7 */ public void remove(Comparable rowKey, Comparable columnKey) { // defer null argument checks int r = getRowIndex(rowKey); int c = getColumnIndex(columnKey); this.data.removeObject(rowKey, columnKey); // if this cell held a maximum and/or minimum value, we'll need to // update the cached bounds... if ((this.maximumRangeValueRow == r && this.maximumRangeValueColumn == c) || (this.minimumRangeValueRow == r && this.minimumRangeValueColumn == c)) { updateBounds(); } fireDatasetChanged(); } /** * Removes a row from the dataset and sends a {@link DatasetChangeEvent} * to all registered listeners. * * @param rowIndex the row index. * * @see #removeColumn(int) * * @since 1.0.7 */ public void removeRow(int rowIndex) { this.data.removeRow(rowIndex); updateBounds(); fireDatasetChanged(); } /** * Removes a row from the dataset and sends a {@link DatasetChangeEvent} * to all registered listeners. * * @param rowKey the row key. * * @see #removeColumn(Comparable) * * @since 1.0.7 */ public void removeRow(Comparable rowKey) { this.data.removeRow(rowKey); updateBounds(); fireDatasetChanged(); } /** * Removes a column from the dataset and sends a {@link DatasetChangeEvent} * to all registered listeners. * * @param columnIndex the column index. * * @see #removeRow(int) * * @since 1.0.7 */ public void removeColumn(int columnIndex) { this.data.removeColumn(columnIndex); updateBounds(); fireDatasetChanged(); } /** * Removes a column from the dataset and sends a {@link DatasetChangeEvent} * to all registered listeners. * * @param columnKey the column key. * * @see #removeRow(Comparable) * * @since 1.0.7 */ public void removeColumn(Comparable columnKey) { this.data.removeColumn(columnKey); updateBounds(); fireDatasetChanged(); } /** * Clears all data from the dataset and sends a {@link DatasetChangeEvent} * to all registered listeners. * * @since 1.0.7 */ public void clear() { this.data.clear(); updateBounds(); 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. * * @see #getMedianValue(int, int) * @see #getValue(Comparable, Comparable) */ @Override 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. * * @see #getMedianValue(Comparable, Comparable) * @see #getValue(int, int) */ @Override 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. * * @see #getItem(int, int) */ @Override 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. * * @see #getItem(int, int) */ @Override 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. * * @see #getItem(int, int) */ @Override 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. * * @see #getItem(int, int) */ @Override 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. * * @see #getItem(int, int) */ @Override 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. * * @see #getItem(int, int) */ @Override 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. * * @see #getItem(int, int) */ @Override 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. * * @see #getItem(int, int) */ @Override 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 (<code>null</code> not permitted). * * @return The column index. * * @see #getColumnKey(int) */ @Override public int getColumnIndex(Comparable key) { return this.data.getColumnIndex(key); } /** * Returns a column key. * * @param column the column index (zero-based). * * @return The column key. * * @see #getColumnIndex(Comparable) */ @Override public Comparable getColumnKey(int column) { return this.data.getColumnKey(column); } /** * Returns the column keys. * * @return The keys. * * @see #getRowKeys() */ @Override public List getColumnKeys() { return this.data.getColumnKeys(); } /** * Returns the row index for a given key. * * @param key the row key (<code>null</code> not permitted). * * @return The row index. * * @see #getRowKey(int) */ @Override public int getRowIndex(Comparable key) { // defer null argument check return this.data.getRowIndex(key); } /** * Returns a row key. * * @param row the row index (zero-based). * * @return The row key. * * @see #getRowIndex(Comparable) */ @Override public Comparable getRowKey(int row) { return this.data.getRowKey(row); } /** * Returns the row keys. * * @return The keys. * * @see #getColumnKeys() */ @Override public List getRowKeys() { return this.data.getRowKeys(); } /** * Returns the number of rows in the table. * * @return The row count. * * @see #getColumnCount() */ @Override public int getRowCount() { return this.data.getRowCount(); } /** * Returns the number of columns in the table. * * @return The column count. * * @see #getRowCount() */ @Override public int getColumnCount() { return this.data.getColumnCount(); } /** * Returns the minimum y-value in the dataset. * * @param includeInterval a flag that determines whether or not the * y-interval is taken into account. * * @return The minimum value. * * @see #getRangeUpperBound(boolean) */ @Override public double getRangeLowerBound(boolean includeInterval) { return this.minimumRangeValue; } /** * Returns the maximum y-value in the dataset. * * @param includeInterval a flag that determines whether or not the * y-interval is taken into account. * * @return The maximum value. * * @see #getRangeLowerBound(boolean) */ @Override public double getRangeUpperBound(boolean includeInterval) { return this.maximumRangeValue; } /** * Returns the range of the values in this dataset's range. * * @param includeInterval a flag that determines whether or not the * y-interval is taken into account. * * @return The range. */ @Override public Range getRangeBounds(boolean includeInterval) { return new Range(this.minimumRangeValue, this.maximumRangeValue); } /** * Returns the minimum regular (non outlier) value for an item. * * @param row the row index (zero-based). * @param column the column index (zero-based). * * @return The minimum regular value. * * @see #getItem(int, int) */ @Override public Number getMinRegularValue(int row, int column) { Number result = null; BoxAndWhiskerItem item = (BoxAndWhiskerItem) this.data.getObject(row, column); if (item != null) { result = item.getMinRegularValue(); } return result; } /** * Returns the minimum regular (non outlier) value for an item. * * @param rowKey the row key. * @param columnKey the column key. * * @return The minimum regular value. * * @see #getItem(int, int) */ @Override public Number getMinRegularValue(Comparable rowKey, Comparable columnKey) { Number result = null; BoxAndWhiskerItem item = (BoxAndWhiskerItem) this.data.getObject(rowKey, columnKey); if (item != null) { result = item.getMinRegularValue(); } return result; } /** * Returns the maximum regular (non outlier) value for an item. * * @param row the row index (zero-based). * @param column the column index (zero-based). * * @return The maximum regular value. * * @see #getItem(int, int) */ @Override public Number getMaxRegularValue(int row, int column) { Number result = null; BoxAndWhiskerItem item = (BoxAndWhiskerItem) this.data.getObject(row, column); if (item != null) { result = item.getMaxRegularValue(); } return result; } /** * Returns the maximum regular (non outlier) value for an item. * * @param rowKey the row key. * @param columnKey the column key. * * @return The maximum regular value. * * @see #getItem(int, int) */ @Override public Number getMaxRegularValue(Comparable rowKey, Comparable columnKey) { Number result = null; BoxAndWhiskerItem item = (BoxAndWhiskerItem) this.data.getObject(rowKey, columnKey); if (item != null) { result = item.getMaxRegularValue(); } return result; } /** * Returns the minimum outlier (non farout) value for an item. * * @param row the row index (zero-based). * @param column the column index (zero-based). * * @return The minimum outlier. * * @see #getItem(int, int) */ @Override public Number getMinOutlier(int row, int column) { Number result = null; BoxAndWhiskerItem item = (BoxAndWhiskerItem) this.data.getObject(row, column); if (item != null) { result = item.getMinOutlier(); } return result; } /** * Returns the minimum outlier (non farout) value for an item. * * @param rowKey the row key. * @param columnKey the column key. * * @return The minimum outlier. * * @see #getItem(int, int) */ @Override public Number getMinOutlier(Comparable rowKey, Comparable columnKey) { Number result = null; BoxAndWhiskerItem item = (BoxAndWhiskerItem) this.data.getObject(rowKey, columnKey); if (item != null) { result = item.getMinOutlier(); } return result; } /** * Returns the maximum outlier (non farout) value for an item. * * @param row the row index (zero-based). * @param column the column index (zero-based). * * @return The maximum outlier. * * @see #getItem(int, int) */ @Override public Number getMaxOutlier(int row, int column) { Number result = null; BoxAndWhiskerItem item = (BoxAndWhiskerItem) this.data.getObject(row, column); if (item != null) { result = item.getMaxOutlier(); } return result; } /** * Returns the maximum outlier (non farout) value for an item. * * @param rowKey the row key. * @param columnKey the column key. * * @return The maximum outlier. * * @see #getItem(int, int) */ @Override public Number getMaxOutlier(Comparable rowKey, Comparable columnKey) { Number result = null; BoxAndWhiskerItem item = (BoxAndWhiskerItem) this.data.getObject(rowKey, columnKey); if (item != null) { result = item.getMaxOutlier(); } return result; } /** * Returns a list of outlier values for an item. * * @param row the row index (zero-based). * @param column the column index (zero-based). * * @return A list of outlier values. * * @see #getItem(int, int) */ @Override public List getOutliers(int row, int column) { List result = null; BoxAndWhiskerItem item = (BoxAndWhiskerItem) this.data.getObject(row, column); if (item != null) { result = item.getOutliers(); } return result; } /** * Returns a list of outlier values for an item. * * @param rowKey the row key. * @param columnKey the column key. * * @return A list of outlier values. * * @see #getItem(int, int) */ @Override public List getOutliers(Comparable rowKey, Comparable columnKey) { List result = null; BoxAndWhiskerItem item = (BoxAndWhiskerItem) this.data.getObject(rowKey, columnKey); if (item != null) { result = item.getOutliers(); } return result; } /** * Resets the cached bounds, by iterating over the entire dataset to find * the current bounds. */ private void updateBounds() { this.minimumRangeValue = Double.NaN; this.minimumRangeValueRow = -1; this.minimumRangeValueColumn = -1; this.maximumRangeValue = Double.NaN; this.maximumRangeValueRow = -1; this.maximumRangeValueColumn = -1; int rowCount = getRowCount(); int columnCount = getColumnCount(); for (int r = 0; r < rowCount; r++) { for (int c = 0; c < columnCount; c++) { BoxAndWhiskerItem item = getItem(r, c); if (item != null) { Number min = item.getMinOutlier(); if (min != null) { double minv = min.doubleValue(); if (!Double.isNaN(minv)) { if (minv < this.minimumRangeValue || Double.isNaN(this.minimumRangeValue)) { this.minimumRangeValue = minv; this.minimumRangeValueRow = r; this.minimumRangeValueColumn = c; } } } Number max = item.getMaxOutlier(); if (max != null) { double maxv = max.doubleValue(); if (!Double.isNaN(maxv)) { if (maxv > this.maximumRangeValue || Double.isNaN(this.maximumRangeValue)) { this.maximumRangeValue = maxv; this.maximumRangeValueRow = r; this.maximumRangeValueColumn = c; } } } } } } } /** * Tests this dataset for equality with an arbitrary object. * * @param obj the object to test against (<code>null</code> permitted). * * @return A boolean. */ @Override public boolean equals(Object obj) { if (obj == this) { return true; } if (obj instanceof DefaultBoxAndWhiskerCategoryDataset) { DefaultBoxAndWhiskerCategoryDataset dataset = (DefaultBoxAndWhiskerCategoryDataset) obj; return ObjectUtilities.equal(this.data, dataset.data); } return false; } /** * Returns a clone of this dataset. * * @return A clone. * * @throws CloneNotSupportedException if cloning is not possible. */ @Override public Object clone() throws CloneNotSupportedException { DefaultBoxAndWhiskerCategoryDataset clone = (DefaultBoxAndWhiskerCategoryDataset) super.clone(); clone.data = (KeyedObjects2D) this.data.clone(); return clone; } }