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JFreeChart is a class library, written in Java, for generating charts.
Utilising the Java2D APIs, it currently supports bar charts, pie charts,
line charts, XY-plots and time series plots.
/* ===========================================================
* 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.]
*
* -----------------------------
* DefaultIntervalXYDataset.java
* -----------------------------
* (C) Copyright 2006-2009, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes
* -------
* 23-Oct-2006 : Version 1 (DG);
* 02-Nov-2006 : Fixed a problem with adding a new series with the same key
* as an existing series (see bug 1589392) (DG);
* 28-Nov-2006 : New override for clone() (DG);
* 22-Apr-2008 : Implemented PublicCloneable (DG);
* 10-Aug-2009 : Fixed typo in Javadocs - see bug 2830419 (DG);
*
*/
package org.jfree.data.xy;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.jfree.data.general.DatasetChangeEvent;
import org.jfree.util.PublicCloneable;
/**
* A dataset that defines a range (interval) for both the x-values and the
* y-values. This implementation uses six arrays to store the x, start-x,
* end-x, y, start-y and end-y values.
*
* An alternative implementation of the {@link IntervalXYDataset} interface
* is provided by the {@link XYIntervalSeriesCollection} class.
*
* @since 1.0.3
*/
public class DefaultIntervalXYDataset extends AbstractIntervalXYDataset
implements PublicCloneable {
/**
* Storage for the series keys. This list must be kept in sync with the
* seriesList.
*/
private List seriesKeys;
/**
* Storage for the series in the dataset. We use a list because the
* order of the series is significant. This list must be kept in sync
* with the seriesKeys list.
*/
private List seriesList;
/**
* Creates a new DefaultIntervalXYDataset instance, initially
* containing no data.
*/
public DefaultIntervalXYDataset() {
this.seriesKeys = new java.util.ArrayList();
this.seriesList = new java.util.ArrayList();
}
/**
* Returns the number of series in the dataset.
*
* @return The series count.
*/
@Override
public int getSeriesCount() {
return this.seriesList.size();
}
/**
* Returns the key for a series.
*
* @param series the series index (in the range 0 to
* getSeriesCount() - 1).
*
* @return The key for the series.
*
* @throws IllegalArgumentException if series is not in the
* specified range.
*/
@Override
public Comparable getSeriesKey(int series) {
if ((series < 0) || (series >= getSeriesCount())) {
throw new IllegalArgumentException("Series index out of bounds");
}
return (Comparable) this.seriesKeys.get(series);
}
/**
* Returns the number of items in the specified series.
*
* @param series the series index (in the range 0 to
* getSeriesCount() - 1).
*
* @return The item count.
*
* @throws IllegalArgumentException if series is not in the
* specified range.
*/
@Override
public int getItemCount(int series) {
if ((series < 0) || (series >= getSeriesCount())) {
throw new IllegalArgumentException("Series index out of bounds");
}
double[][] seriesArray = (double[][]) this.seriesList.get(series);
return seriesArray[0].length;
}
/**
* Returns the x-value for an item within a series.
*
* @param series the series index (in the range 0 to
* getSeriesCount() - 1).
* @param item the item index (in the range 0 to
* getItemCount(series)).
*
* @return The x-value.
*
* @throws ArrayIndexOutOfBoundsException if series is not
* within the specified range.
* @throws ArrayIndexOutOfBoundsException if item is not
* within the specified range.
*
* @see #getX(int, int)
*/
@Override
public double getXValue(int series, int item) {
double[][] seriesData = (double[][]) this.seriesList.get(series);
return seriesData[0][item];
}
/**
* Returns the y-value for an item within a series.
*
* @param series the series index (in the range 0 to
* getSeriesCount() - 1).
* @param item the item index (in the range 0 to
* getItemCount(series)).
*
* @return The y-value.
*
* @throws ArrayIndexOutOfBoundsException if series is not
* within the specified range.
* @throws ArrayIndexOutOfBoundsException if item is not
* within the specified range.
*
* @see #getY(int, int)
*/
@Override
public double getYValue(int series, int item) {
double[][] seriesData = (double[][]) this.seriesList.get(series);
return seriesData[3][item];
}
/**
* Returns the starting x-value for an item within a series.
*
* @param series the series index (in the range 0 to
* getSeriesCount() - 1).
* @param item the item index (in the range 0 to
* getItemCount(series)).
*
* @return The starting x-value.
*
* @throws ArrayIndexOutOfBoundsException if series is not
* within the specified range.
* @throws ArrayIndexOutOfBoundsException if item is not
* within the specified range.
*
* @see #getStartX(int, int)
*/
@Override
public double getStartXValue(int series, int item) {
double[][] seriesData = (double[][]) this.seriesList.get(series);
return seriesData[1][item];
}
/**
* Returns the ending x-value for an item within a series.
*
* @param series the series index (in the range 0 to
* getSeriesCount() - 1).
* @param item the item index (in the range 0 to
* getItemCount(series)).
*
* @return The ending x-value.
*
* @throws ArrayIndexOutOfBoundsException if series is not
* within the specified range.
* @throws ArrayIndexOutOfBoundsException if item is not
* within the specified range.
*
* @see #getEndX(int, int)
*/
@Override
public double getEndXValue(int series, int item) {
double[][] seriesData = (double[][]) this.seriesList.get(series);
return seriesData[2][item];
}
/**
* Returns the starting y-value for an item within a series.
*
* @param series the series index (in the range 0 to
* getSeriesCount() - 1).
* @param item the item index (in the range 0 to
* getItemCount(series)).
*
* @return The starting y-value.
*
* @throws ArrayIndexOutOfBoundsException if series is not
* within the specified range.
* @throws ArrayIndexOutOfBoundsException if item is not
* within the specified range.
*
* @see #getStartY(int, int)
*/
@Override
public double getStartYValue(int series, int item) {
double[][] seriesData = (double[][]) this.seriesList.get(series);
return seriesData[4][item];
}
/**
* Returns the ending y-value for an item within a series.
*
* @param series the series index (in the range 0 to
* getSeriesCount() - 1).
* @param item the item index (in the range 0 to
* getItemCount(series)).
*
* @return The ending y-value.
*
* @throws ArrayIndexOutOfBoundsException if series is not
* within the specified range.
* @throws ArrayIndexOutOfBoundsException if item is not
* within the specified range.
*
* @see #getEndY(int, int)
*/
@Override
public double getEndYValue(int series, int item) {
double[][] seriesData = (double[][]) this.seriesList.get(series);
return seriesData[5][item];
}
/**
* Returns the ending x-value for an item within a series.
*
* @param series the series index (in the range 0 to
* getSeriesCount() - 1).
* @param item the item index (in the range 0 to
* getItemCount(series)).
*
* @return The ending x-value.
*
* @throws ArrayIndexOutOfBoundsException if series is not
* within the specified range.
* @throws ArrayIndexOutOfBoundsException if item is not
* within the specified range.
*
* @see #getEndXValue(int, int)
*/
@Override
public Number getEndX(int series, int item) {
return new Double(getEndXValue(series, item));
}
/**
* Returns the ending y-value for an item within a series.
*
* @param series the series index (in the range 0 to
* getSeriesCount() - 1).
* @param item the item index (in the range 0 to
* getItemCount(series)).
*
* @return The ending y-value.
*
* @throws ArrayIndexOutOfBoundsException if series is not
* within the specified range.
* @throws ArrayIndexOutOfBoundsException if item is not
* within the specified range.
*
* @see #getEndYValue(int, int)
*/
@Override
public Number getEndY(int series, int item) {
return new Double(getEndYValue(series, item));
}
/**
* Returns the starting x-value for an item within a series.
*
* @param series the series index (in the range 0 to
* getSeriesCount() - 1).
* @param item the item index (in the range 0 to
* getItemCount(series)).
*
* @return The starting x-value.
*
* @throws ArrayIndexOutOfBoundsException if series is not
* within the specified range.
* @throws ArrayIndexOutOfBoundsException if item is not
* within the specified range.
*
* @see #getStartXValue(int, int)
*/
@Override
public Number getStartX(int series, int item) {
return new Double(getStartXValue(series, item));
}
/**
* Returns the starting y-value for an item within a series.
*
* @param series the series index (in the range 0 to
* getSeriesCount() - 1).
* @param item the item index (in the range 0 to
* getItemCount(series)).
*
* @return The starting y-value.
*
* @throws ArrayIndexOutOfBoundsException if series is not
* within the specified range.
* @throws ArrayIndexOutOfBoundsException if item is not
* within the specified range.
*
* @see #getStartYValue(int, int)
*/
@Override
public Number getStartY(int series, int item) {
return new Double(getStartYValue(series, item));
}
/**
* Returns the x-value for an item within a series.
*
* @param series the series index (in the range 0 to
* getSeriesCount() - 1).
* @param item the item index (in the range 0 to
* getItemCount(series)).
*
* @return The x-value.
*
* @throws ArrayIndexOutOfBoundsException if series is not
* within the specified range.
* @throws ArrayIndexOutOfBoundsException if item is not
* within the specified range.
*
* @see #getXValue(int, int)
*/
@Override
public Number getX(int series, int item) {
return new Double(getXValue(series, item));
}
/**
* Returns the y-value for an item within a series.
*
* @param series the series index (in the range 0 to
* getSeriesCount() - 1).
* @param item the item index (in the range 0 to
* getItemCount(series)).
*
* @return The y-value.
*
* @throws ArrayIndexOutOfBoundsException if series is not
* within the specified range.
* @throws ArrayIndexOutOfBoundsException if item is not
* within the specified range.
*
* @see #getYValue(int, int)
*/
@Override
public Number getY(int series, int item) {
return new Double(getYValue(series, item));
}
/**
* Adds a series or if a series with the same key already exists replaces
* the data for that series, then sends a {@link DatasetChangeEvent} to
* all registered listeners.
*
* @param seriesKey the series key (null not permitted).
* @param data the data (must be an array with length 6, containing six
* arrays of equal length, the first three containing the x-values
* (x, xLow and xHigh) and the last three containing the y-values
* (y, yLow and yHigh)).
*/
public void addSeries(Comparable seriesKey, double[][] data) {
if (seriesKey == null) {
throw new IllegalArgumentException(
"The 'seriesKey' cannot be null.");
}
if (data == null) {
throw new IllegalArgumentException("The 'data' is null.");
}
if (data.length != 6) {
throw new IllegalArgumentException(
"The 'data' array must have length == 6.");
}
int length = data[0].length;
if (length != data[1].length || length != data[2].length
|| length != data[3].length || length != data[4].length
|| length != data[5].length) {
throw new IllegalArgumentException(
"The 'data' array must contain six arrays with equal length.");
}
int seriesIndex = indexOf(seriesKey);
if (seriesIndex == -1) { // add a new series
this.seriesKeys.add(seriesKey);
this.seriesList.add(data);
}
else { // replace an existing series
this.seriesList.remove(seriesIndex);
this.seriesList.add(seriesIndex, data);
}
notifyListeners(new DatasetChangeEvent(this, this));
}
/**
* Tests this DefaultIntervalXYDataset instance for equality
* with an arbitrary object. This method returns true if and
* only if:
*
* obj is not null;obj is an instance of
* DefaultIntervalXYDataset;- both datasets have the same number of series, each containing
* exactly the same values.
*
*
* @param obj the object (null permitted).
*
* @return A boolean.
*/
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof DefaultIntervalXYDataset)) {
return false;
}
DefaultIntervalXYDataset that = (DefaultIntervalXYDataset) obj;
if (!this.seriesKeys.equals(that.seriesKeys)) {
return false;
}
for (int i = 0; i < this.seriesList.size(); i++) {
double[][] d1 = (double[][]) this.seriesList.get(i);
double[][] d2 = (double[][]) that.seriesList.get(i);
double[] d1x = d1[0];
double[] d2x = d2[0];
if (!Arrays.equals(d1x, d2x)) {
return false;
}
double[] d1xs = d1[1];
double[] d2xs = d2[1];
if (!Arrays.equals(d1xs, d2xs)) {
return false;
}
double[] d1xe = d1[2];
double[] d2xe = d2[2];
if (!Arrays.equals(d1xe, d2xe)) {
return false;
}
double[] d1y = d1[3];
double[] d2y = d2[3];
if (!Arrays.equals(d1y, d2y)) {
return false;
}
double[] d1ys = d1[4];
double[] d2ys = d2[4];
if (!Arrays.equals(d1ys, d2ys)) {
return false;
}
double[] d1ye = d1[5];
double[] d2ye = d2[5];
if (!Arrays.equals(d1ye, d2ye)) {
return false;
}
}
return true;
}
/**
* Returns a hash code for this instance.
*
* @return A hash code.
*/
@Override
public int hashCode() {
int result;
result = this.seriesKeys.hashCode();
result = 29 * result + this.seriesList.hashCode();
return result;
}
/**
* Returns a clone of this dataset.
*
* @return A clone.
*
* @throws CloneNotSupportedException if the dataset contains a series with
* a key that cannot be cloned.
*/
@Override
public Object clone() throws CloneNotSupportedException {
DefaultIntervalXYDataset clone
= (DefaultIntervalXYDataset) super.clone();
clone.seriesKeys = new java.util.ArrayList(this.seriesKeys);
clone.seriesList = new ArrayList(this.seriesList.size());
for (int i = 0; i < this.seriesList.size(); i++) {
double[][] data = (double[][]) this.seriesList.get(i);
double[] x = data[0];
double[] xStart = data[1];
double[] xEnd = data[2];
double[] y = data[3];
double[] yStart = data[4];
double[] yEnd = data[5];
double[] xx = new double[x.length];
double[] xxStart = new double[xStart.length];
double[] xxEnd = new double[xEnd.length];
double[] yy = new double[y.length];
double[] yyStart = new double[yStart.length];
double[] yyEnd = new double[yEnd.length];
System.arraycopy(x, 0, xx, 0, x.length);
System.arraycopy(xStart, 0, xxStart, 0, xStart.length);
System.arraycopy(xEnd, 0, xxEnd, 0, xEnd.length);
System.arraycopy(y, 0, yy, 0, y.length);
System.arraycopy(yStart, 0, yyStart, 0, yStart.length);
System.arraycopy(yEnd, 0, yyEnd, 0, yEnd.length);
clone.seriesList.add(i, new double[][] {xx, xxStart, xxEnd, yy,
yyStart, yyEnd});
}
return clone;
}
}