jfreechart example source code file (DefaultStatisticalCategoryDataset.java)
The jfreechart DefaultStatisticalCategoryDataset.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.]
*
* --------------------------------------
* DefaultStatisticalCategoryDataset.java
* --------------------------------------
* (C) Copyright 2002-2008, by Pascal Collet and Contributors.
*
* Original Author: Pascal Collet;
* Contributor(s): David Gilbert (for Object Refinery Limited);
*
* Changes
* -------
* 21-Aug-2002 : Version 1, contributed by Pascal Collet (DG);
* 07-Oct-2002 : Fixed errors reported by Checkstyle (DG);
* 05-Feb-2003 : Revised implementation to use KeyedObjects2D (DG);
* 28-Aug-2003 : Moved from org.jfree.data --> org.jfree.data.statistics (DG);
* 06-Oct-2003 : Removed incorrect Javadoc text (DG);
* 18-Nov-2004 : Updated for changes in RangeInfo interface (DG);
* 11-Jan-2005 : Removed deprecated code in preparation for the 1.0.0
* release (DG);
* 01-Feb-2005 : Changed minimumRangeValue and maximumRangeValue from Double
* to double (DG);
* 05-Feb-2005 : Implemented equals() method (DG);
* ------------- JFREECHART 1.0.x ---------------------------------------------
* 08-Aug-2006 : Reworked implementation of RangeInfo methods (DG);
* 02-Feb-2007 : Removed author tags from all over JFreeChart sources (DG);
* 28-Sep-2007 : Fixed cloning bug (DG);
* 02-Oct-2007 : Fixed bug updating cached range values (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.PublicCloneable;
/**
* A convenience class that provides a default implementation of the
* {@link StatisticalCategoryDataset} interface.
*/
public class DefaultStatisticalCategoryDataset extends AbstractDataset
implements StatisticalCategoryDataset, RangeInfo, PublicCloneable {
/** Storage for the data. */
private KeyedObjects2D data;
/** The minimum range value. */
private double minimumRangeValue;
/** The row index for the minimum range value. */
private int minimumRangeValueRow;
/** The column index for the minimum range value. */
private int minimumRangeValueColumn;
/** The minimum range value including the standard deviation. */
private double minimumRangeValueIncStdDev;
/**
* The row index for the minimum range value (including the standard
* deviation).
*/
private int minimumRangeValueIncStdDevRow;
/**
* The column index for the minimum range value (including the standard
* deviation).
*/
private int minimumRangeValueIncStdDevColumn;
/** The maximum range value. */
private double maximumRangeValue;
/** The row index for the maximum range value. */
private int maximumRangeValueRow;
/** The column index for the maximum range value. */
private int maximumRangeValueColumn;
/** The maximum range value including the standard deviation. */
private double maximumRangeValueIncStdDev;
/**
* The row index for the maximum range value (including the standard
* deviation).
*/
private int maximumRangeValueIncStdDevRow;
/**
* The column index for the maximum range value (including the standard
* deviation).
*/
private int maximumRangeValueIncStdDevColumn;
/**
* Creates a new dataset.
*/
public DefaultStatisticalCategoryDataset() {
this.data = new KeyedObjects2D();
this.minimumRangeValue = Double.NaN;
this.minimumRangeValueRow = -1;
this.minimumRangeValueColumn = -1;
this.maximumRangeValue = Double.NaN;
this.maximumRangeValueRow = -1;
this.maximumRangeValueColumn = -1;
this.minimumRangeValueIncStdDev = Double.NaN;
this.minimumRangeValueIncStdDevRow = -1;
this.minimumRangeValueIncStdDevColumn = -1;
this.maximumRangeValueIncStdDev = Double.NaN;
this.maximumRangeValueIncStdDevRow = -1;
this.maximumRangeValueIncStdDevColumn = -1;
}
/**
* 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 (possibly <code>null).
*/
public Number getMeanValue(int row, int column) {
Number result = null;
MeanAndStandardDeviation masd = (MeanAndStandardDeviation)
this.data.getObject(row, column);
if (masd != null) {
result = masd.getMean();
}
return result;
}
/**
* Returns the value for an item (for this dataset, the mean value is
* returned).
*
* @param row the row index.
* @param column the column index.
*
* @return The value (possibly <code>null).
*/
public Number getValue(int row, int column) {
return getMeanValue(row, column);
}
/**
* Returns the value for an item (for this dataset, the mean value is
* returned).
*
* @param rowKey the row key.
* @param columnKey the columnKey.
*
* @return The value (possibly <code>null).
*/
public Number getValue(Comparable rowKey, Comparable columnKey) {
return getMeanValue(rowKey, columnKey);
}
/**
* Returns the mean value for an item.
*
* @param rowKey the row key.
* @param columnKey the columnKey.
*
* @return The mean value (possibly <code>null).
*/
public Number getMeanValue(Comparable rowKey, Comparable columnKey) {
Number result = null;
MeanAndStandardDeviation masd = (MeanAndStandardDeviation)
this.data.getObject(rowKey, columnKey);
if (masd != null) {
result = masd.getMean();
}
return result;
}
/**
* Returns the standard deviation value for an item.
*
* @param row the row index (zero-based).
* @param column the column index (zero-based).
*
* @return The standard deviation (possibly <code>null).
*/
public Number getStdDevValue(int row, int column) {
Number result = null;
MeanAndStandardDeviation masd = (MeanAndStandardDeviation)
this.data.getObject(row, column);
if (masd != null) {
result = masd.getStandardDeviation();
}
return result;
}
/**
* Returns the standard deviation value for an item.
*
* @param rowKey the row key.
* @param columnKey the columnKey.
*
* @return The standard deviation (possibly <code>null).
*/
public Number getStdDevValue(Comparable rowKey, Comparable columnKey) {
Number result = null;
MeanAndStandardDeviation masd = (MeanAndStandardDeviation)
this.data.getObject(rowKey, columnKey);
if (masd != null) {
result = masd.getStandardDeviation();
}
return result;
}
/**
* Returns the column index for a given key.
*
* @param key the column key (<code>null not permitted).
*
* @return The column index.
*/
public int getColumnIndex(Comparable key) {
// defer null argument check
return this.data.getColumnIndex(key);
}
/**
* Returns a column key.
*
* @param column the column index (zero-based).
*
* @return The column key.
*/
public Comparable getColumnKey(int column) {
return this.data.getColumnKey(column);
}
/**
* Returns the column keys.
*
* @return The keys.
*/
public List getColumnKeys() {
return this.data.getColumnKeys();
}
/**
* Returns the row index for a given key.
*
* @param key the row key (<code>null not permitted).
*
* @return The row index.
*/
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.
*/
public Comparable getRowKey(int row) {
return this.data.getRowKey(row);
}
/**
* Returns the row keys.
*
* @return The keys.
*/
public List getRowKeys() {
return this.data.getRowKeys();
}
/**
* Returns the number of rows in the table.
*
* @return The row count.
*
* @see #getColumnCount()
*/
public int getRowCount() {
return this.data.getRowCount();
}
/**
* Returns the number of columns in the table.
*
* @return The column count.
*
* @see #getRowCount()
*/
public int getColumnCount() {
return this.data.getColumnCount();
}
/**
* Adds a mean and standard deviation to the table.
*
* @param mean the mean.
* @param standardDeviation the standard deviation.
* @param rowKey the row key.
* @param columnKey the column key.
*/
public void add(double mean, double standardDeviation,
Comparable rowKey, Comparable columnKey) {
add(new Double(mean), new Double(standardDeviation), rowKey, columnKey);
}
/**
* Adds a mean and standard deviation to the table.
*
* @param mean the mean.
* @param standardDeviation the standard deviation.
* @param rowKey the row key.
* @param columnKey the column key.
*/
public void add(Number mean, Number standardDeviation,
Comparable rowKey, Comparable columnKey) {
MeanAndStandardDeviation item = new MeanAndStandardDeviation(
mean, standardDeviation);
this.data.addObject(item, rowKey, columnKey);
double m = Double.NaN;
double sd = Double.NaN;
if (mean != null) {
m = mean.doubleValue();
}
if (standardDeviation != null) {
sd = standardDeviation.doubleValue();
}
// update cached range values
int r = this.data.getColumnIndex(columnKey);
int c = this.data.getRowIndex(rowKey);
if ((r == this.maximumRangeValueRow && c
== this.maximumRangeValueColumn) || (r
== this.maximumRangeValueIncStdDevRow && c
== this.maximumRangeValueIncStdDevColumn) || (r
== this.minimumRangeValueRow && c
== this.minimumRangeValueColumn) || (r
== this.minimumRangeValueIncStdDevRow && c
== this.minimumRangeValueIncStdDevColumn)) {
// iterate over all data items and update mins and maxes
updateBounds();
}
else {
if (!Double.isNaN(m)) {
if (Double.isNaN(this.maximumRangeValue)
|| m > this.maximumRangeValue) {
this.maximumRangeValue = m;
this.maximumRangeValueRow = r;
this.maximumRangeValueColumn = c;
}
}
if (!Double.isNaN(m + sd)) {
if (Double.isNaN(this.maximumRangeValueIncStdDev)
|| (m + sd) > this.maximumRangeValueIncStdDev) {
this.maximumRangeValueIncStdDev = m + sd;
this.maximumRangeValueIncStdDevRow = r;
this.maximumRangeValueIncStdDevColumn = c;
}
}
if (!Double.isNaN(m)) {
if (Double.isNaN(this.minimumRangeValue)
|| m < this.minimumRangeValue) {
this.minimumRangeValue = m;
this.minimumRangeValueRow = r;
this.minimumRangeValueColumn = c;
}
}
if (!Double.isNaN(m - sd)) {
if (Double.isNaN(this.minimumRangeValueIncStdDev)
|| (m - sd) < this.minimumRangeValueIncStdDev) {
this.minimumRangeValueIncStdDev = m - sd;
this.minimumRangeValueIncStdDevRow = r;
this.minimumRangeValueIncStdDevColumn = c;
}
}
}
fireDatasetChanged();
}
/**
* Removes an item from the dataset and sends a {@link DatasetChangeEvent}
* to all registered listeners.
*
* @param rowKey the row key (<code>null not permitted).
* @param columnKey the column key (<code>null not permitted).
*
* @see #add(double, double, 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 ((r == this.maximumRangeValueRow && c
== this.maximumRangeValueColumn) || (r
== this.maximumRangeValueIncStdDevRow && c
== this.maximumRangeValueIncStdDevColumn) || (r
== this.minimumRangeValueRow && c
== this.minimumRangeValueColumn) || (r
== this.minimumRangeValueIncStdDevRow && c
== this.minimumRangeValueIncStdDevColumn)) {
// iterate over all data items and update mins and maxes
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 (<code>null not permitted).
*
* @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 (<code>null not permitted).
*
* @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();
}
/**
* Iterate over all the data items and update the cached bound values.
*/
private void updateBounds() {
this.maximumRangeValue = Double.NaN;
this.maximumRangeValueRow = -1;
this.maximumRangeValueColumn = -1;
this.minimumRangeValue = Double.NaN;
this.minimumRangeValueRow = -1;
this.minimumRangeValueColumn = -1;
this.maximumRangeValueIncStdDev = Double.NaN;
this.maximumRangeValueIncStdDevRow = -1;
this.maximumRangeValueIncStdDevColumn = -1;
this.minimumRangeValueIncStdDev = Double.NaN;
this.minimumRangeValueIncStdDevRow = -1;
this.minimumRangeValueIncStdDevColumn = -1;
int rowCount = this.data.getRowCount();
int columnCount = this.data.getColumnCount();
for (int r = 0; r < rowCount; r++) {
for (int c = 0; c < columnCount; c++) {
double m = Double.NaN;
double sd = Double.NaN;
MeanAndStandardDeviation masd = (MeanAndStandardDeviation)
this.data.getObject(r, c);
if (masd == null) {
continue;
}
m = masd.getMeanValue();
sd = masd.getStandardDeviationValue();
if (!Double.isNaN(m)) {
// update the max value
if (Double.isNaN(this.maximumRangeValue)) {
this.maximumRangeValue = m;
this.maximumRangeValueRow = r;
this.maximumRangeValueColumn = c;
}
else {
if (m > this.maximumRangeValue) {
this.maximumRangeValue = m;
this.maximumRangeValueRow = r;
this.maximumRangeValueColumn = c;
}
}
// update the min value
if (Double.isNaN(this.minimumRangeValue)) {
this.minimumRangeValue = m;
this.minimumRangeValueRow = r;
this.minimumRangeValueColumn = c;
}
else {
if (m < this.minimumRangeValue) {
this.minimumRangeValue = m;
this.minimumRangeValueRow = r;
this.minimumRangeValueColumn = c;
}
}
if (!Double.isNaN(sd)) {
// update the max value
if (Double.isNaN(this.maximumRangeValueIncStdDev)) {
this.maximumRangeValueIncStdDev = m + sd;
this.maximumRangeValueIncStdDevRow = r;
this.maximumRangeValueIncStdDevColumn = c;
}
else {
if (m + sd > this.maximumRangeValueIncStdDev) {
this.maximumRangeValueIncStdDev = m + sd;
this.maximumRangeValueIncStdDevRow = r;
this.maximumRangeValueIncStdDevColumn = c;
}
}
// update the min value
if (Double.isNaN(this.minimumRangeValueIncStdDev)) {
this.minimumRangeValueIncStdDev = m - sd;
this.minimumRangeValueIncStdDevRow = r;
this.minimumRangeValueIncStdDevColumn = c;
}
else {
if (m - sd < this.minimumRangeValueIncStdDev) {
this.minimumRangeValueIncStdDev = m - sd;
this.minimumRangeValueIncStdDevRow = r;
this.minimumRangeValueIncStdDevColumn = c;
}
}
}
}
}
}
}
/**
* 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)
*/
public double getRangeLowerBound(boolean includeInterval) {
if (includeInterval) {
return this.minimumRangeValueIncStdDev;
}
else {
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)
*/
public double getRangeUpperBound(boolean includeInterval) {
if (includeInterval) {
return this.maximumRangeValueIncStdDev;
}
else {
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.
*/
public Range getRangeBounds(boolean includeInterval) {
Range result = null;
if (includeInterval) {
if (!Double.isNaN(this.minimumRangeValueIncStdDev)
&& !Double.isNaN(this.maximumRangeValueIncStdDev)) {
result = new Range(this.minimumRangeValueIncStdDev,
this.maximumRangeValueIncStdDev);
}
}
else {
if (!Double.isNaN(this.minimumRangeValue)
&& !Double.isNaN(this.maximumRangeValue)) {
result = new Range(this.minimumRangeValue,
this.maximumRangeValue);
}
}
return result;
}
/**
* Tests this instance 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 DefaultStatisticalCategoryDataset)) {
return false;
}
DefaultStatisticalCategoryDataset that
= (DefaultStatisticalCategoryDataset) obj;
if (!this.data.equals(that.data)) {
return false;
}
return true;
}
/**
* Returns a clone of this dataset.
*
* @return A clone of this dataset.
*
* @throws CloneNotSupportedException if cloning cannot be completed.
*/
public Object clone() throws CloneNotSupportedException {
DefaultStatisticalCategoryDataset clone
= (DefaultStatisticalCategoryDataset) super.clone();
clone.data = (KeyedObjects2D) this.data.clone();
return clone;
}
}
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