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/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2020, 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.]
*
* ----------------------------------
* DefaultBoxAndWhiskerXYDataset.java
* ----------------------------------
* (C) Copyright 2003-2020, by David Browning and Contributors.
*
* Original Author: David Browning (for Australian Institute of Marine
* Science);
* Contributor(s): David Gilbert (for Object Refinery Limited);
*
*/
package org.jfree.data.statistics;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import org.jfree.chart.util.ObjectUtils;
import org.jfree.data.Range;
import org.jfree.data.RangeInfo;
import org.jfree.data.general.DatasetChangeEvent;
import org.jfree.data.xy.AbstractXYDataset;
/**
* A simple implementation of the {@link BoxAndWhiskerXYDataset} interface.
* This dataset implementation can hold only one series.
*/
public class DefaultBoxAndWhiskerXYDataset extends AbstractXYDataset
implements BoxAndWhiskerXYDataset, RangeInfo {
/** The series key. */
private Comparable seriesKey;
/** Storage for the dates. */
private List dates;
/** Storage for the box and whisker statistics. */
private List items;
/** The minimum range value. */
private Number minimumRangeValue;
/** The maximum range value. */
private Number maximumRangeValue;
/** The range of values. */
private Range rangeBounds;
/**
* The coefficient used to calculate outliers. Tukey's default value is
* 1.5 (see EDA) Any value which is greater than Q3 + (interquartile range
* * outlier coefficient) is considered to be an outlier. Can be altered
* if the data is particularly skewed.
*/
private double outlierCoefficient = 1.5;
/**
* The coefficient used to calculate farouts. Tukey's default value is 2
* (see EDA) Any value which is greater than Q3 + (interquartile range *
* farout coefficient) is considered to be a farout. Can be altered if the
* data is particularly skewed.
*/
private double faroutCoefficient = 2.0;
/**
* Constructs a new box and whisker dataset.
*
* The current implementation allows only one series in the dataset.
* This may be extended in a future version.
*
* @param seriesKey the key for the series.
*/
public DefaultBoxAndWhiskerXYDataset(Comparable seriesKey) {
this.seriesKey = seriesKey;
this.dates = new ArrayList();
this.items = new ArrayList();
this.minimumRangeValue = null;
this.maximumRangeValue = null;
this.rangeBounds = null;
}
/**
* Returns the value used as the outlier coefficient. The outlier
* coefficient gives an indication of the degree of certainty in an
* unskewed distribution. Increasing the coefficient increases the number
* of values included. Currently only used to ensure farout coefficient is
* greater than the outlier coefficient
*
* @return A {@code double} representing the value used to calculate
* outliers.
*
* @see #setOutlierCoefficient(double)
*/
@Override
public double getOutlierCoefficient() {
return this.outlierCoefficient;
}
/**
* Sets the value used as the outlier coefficient
*
* @param outlierCoefficient being a {@code double} representing the
* value used to calculate outliers.
*
* @see #getOutlierCoefficient()
*/
public void setOutlierCoefficient(double outlierCoefficient) {
this.outlierCoefficient = outlierCoefficient;
}
/**
* Returns the value used as the farout coefficient. The farout coefficient
* allows the calculation of which values will be off the graph.
*
* @return A {@code double} representing the value used to calculate
* farouts.
*
* @see #setFaroutCoefficient(double)
*/
@Override
public double getFaroutCoefficient() {
return this.faroutCoefficient;
}
/**
* Sets the value used as the farouts coefficient. The farout coefficient
* must b greater than the outlier coefficient.
*
* @param faroutCoefficient being a {@code double} representing the
* value used to calculate farouts.
*
* @see #getFaroutCoefficient()
*/
public void setFaroutCoefficient(double faroutCoefficient) {
if (faroutCoefficient > getOutlierCoefficient()) {
this.faroutCoefficient = faroutCoefficient;
}
else {
throw new IllegalArgumentException("Farout value must be greater "
+ "than the outlier value, which is currently set at: ("
+ getOutlierCoefficient() + ")");
}
}
/**
* Returns the number of series in the dataset.
*
* This implementation only allows one series.
*
* @return The number of series.
*/
@Override
public int getSeriesCount() {
return 1;
}
/**
* Returns the number of items in the specified series.
*
* @param series the index (zero-based) of the series.
*
* @return The number of items in the specified series.
*/
@Override
public int getItemCount(int series) {
return this.dates.size();
}
/**
* Adds an item to the dataset and sends a {@link DatasetChangeEvent} to
* all registered listeners.
*
* @param date the date ({@code null} not permitted).
* @param item the item ({@code null} not permitted).
*/
public void add(Date date, BoxAndWhiskerItem item) {
this.dates.add(date);
this.items.add(item);
if (this.minimumRangeValue == null) {
this.minimumRangeValue = item.getMinRegularValue();
}
else {
if (item.getMinRegularValue().doubleValue()
< this.minimumRangeValue.doubleValue()) {
this.minimumRangeValue = item.getMinRegularValue();
}
}
if (this.maximumRangeValue == null) {
this.maximumRangeValue = item.getMaxRegularValue();
}
else {
if (item.getMaxRegularValue().doubleValue()
> this.maximumRangeValue.doubleValue()) {
this.maximumRangeValue = item.getMaxRegularValue();
}
}
this.rangeBounds = new Range(this.minimumRangeValue.doubleValue(),
this.maximumRangeValue.doubleValue());
fireDatasetChanged();
}
/**
* Returns the name of the series stored in this dataset.
*
* @param i the index of the series. Currently ignored.
*
* @return The name of this series.
*/
@Override
public Comparable getSeriesKey(int i) {
return this.seriesKey;
}
/**
* Return an item from within the dataset.
*
* @param series the series index (ignored, since this dataset contains
* only one series).
* @param item the item within the series (zero-based index)
*
* @return The item.
*/
public BoxAndWhiskerItem getItem(int series, int item) {
return (BoxAndWhiskerItem) this.items.get(item);
}
/**
* Returns the x-value for one item in a series.
*
* The value returned is a Long object generated from the underlying Date
* object.
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
*
* @return The x-value.
*/
@Override
public Number getX(int series, int item) {
return ((Date) this.dates.get(item)).getTime();
}
/**
* Returns the x-value for one item in a series, as a Date.
*
* This method is provided for convenience only.
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
*
* @return The x-value as a Date.
*/
public Date getXDate(int series, int item) {
return (Date) this.dates.get(item);
}
/**
* Returns the y-value for one item in a series.
*
* This method (from the XYDataset interface) is mapped to the
* getMeanValue() method.
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
*
* @return The y-value.
*/
@Override
public Number getY(int series, int item) {
return getMeanValue(series, item);
}
/**
* Returns the mean for the specified series and item.
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
*
* @return The mean for the specified series and item.
*/
@Override
public Number getMeanValue(int series, int item) {
Number result = null;
BoxAndWhiskerItem stats = (BoxAndWhiskerItem) this.items.get(item);
if (stats != null) {
result = stats.getMean();
}
return result;
}
/**
* Returns the median-value for the specified series and item.
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
*
* @return The median-value for the specified series and item.
*/
@Override
public Number getMedianValue(int series, int item) {
Number result = null;
BoxAndWhiskerItem stats = (BoxAndWhiskerItem) this.items.get(item);
if (stats != null) {
result = stats.getMedian();
}
return result;
}
/**
* Returns the Q1 median-value for the specified series and item.
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
*
* @return The Q1 median-value for the specified series and item.
*/
@Override
public Number getQ1Value(int series, int item) {
Number result = null;
BoxAndWhiskerItem stats = (BoxAndWhiskerItem) this.items.get(item);
if (stats != null) {
result = stats.getQ1();
}
return result;
}
/**
* Returns the Q3 median-value for the specified series and item.
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
*
* @return The Q3 median-value for the specified series and item.
*/
@Override
public Number getQ3Value(int series, int item) {
Number result = null;
BoxAndWhiskerItem stats = (BoxAndWhiskerItem) this.items.get(item);
if (stats != null) {
result = stats.getQ3();
}
return result;
}
/**
* Returns the min-value for the specified series and item.
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
*
* @return The min-value for the specified series and item.
*/
@Override
public Number getMinRegularValue(int series, int item) {
Number result = null;
BoxAndWhiskerItem stats = (BoxAndWhiskerItem) this.items.get(item);
if (stats != null) {
result = stats.getMinRegularValue();
}
return result;
}
/**
* Returns the max-value for the specified series and item.
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
*
* @return The max-value for the specified series and item.
*/
@Override
public Number getMaxRegularValue(int series, int item) {
Number result = null;
BoxAndWhiskerItem stats = (BoxAndWhiskerItem) this.items.get(item);
if (stats != null) {
result = stats.getMaxRegularValue();
}
return result;
}
/**
* Returns the minimum value which is not a farout.
* @param series the series (zero-based index).
* @param item the item (zero-based index).
*
* @return A {@code Number} representing the maximum non-farout value.
*/
@Override
public Number getMinOutlier(int series, int item) {
Number result = null;
BoxAndWhiskerItem stats = (BoxAndWhiskerItem) this.items.get(item);
if (stats != null) {
result = stats.getMinOutlier();
}
return result;
}
/**
* Returns the maximum value which is not a farout, ie Q3 + (interquartile
* range * farout coefficient).
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
*
* @return A {@code Number} representing the maximum non-farout value.
*/
@Override
public Number getMaxOutlier(int series, int item) {
Number result = null;
BoxAndWhiskerItem stats = (BoxAndWhiskerItem) this.items.get(item);
if (stats != null) {
result = stats.getMaxOutlier();
}
return result;
}
/**
* Returns a list of outliers for the specified series and item.
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
*
* @return The list of outliers for the specified series and item
* (possibly {@code null}).
*/
@Override
public List getOutliers(int series, int item) {
List result = null;
BoxAndWhiskerItem stats = (BoxAndWhiskerItem) this.items.get(item);
if (stats != null) {
result = stats.getOutliers();
}
return result;
}
/**
* 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.
*/
@Override
public double getRangeLowerBound(boolean includeInterval) {
double result = Double.NaN;
if (this.minimumRangeValue != null) {
result = this.minimumRangeValue.doubleValue();
}
return result;
}
/**
* 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.
*/
@Override
public double getRangeUpperBound(boolean includeInterval) {
double result = Double.NaN;
if (this.maximumRangeValue != null) {
result = this.maximumRangeValue.doubleValue();
}
return result;
}
/**
* 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 this.rangeBounds;
}
/**
* Tests this dataset for equality with an arbitrary object.
*
* @param obj the object ({@code null} permitted).
*
* @return A boolean.
*/
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof DefaultBoxAndWhiskerXYDataset)) {
return false;
}
DefaultBoxAndWhiskerXYDataset that
= (DefaultBoxAndWhiskerXYDataset) obj;
if (!ObjectUtils.equal(this.seriesKey, that.seriesKey)) {
return false;
}
if (!this.dates.equals(that.dates)) {
return false;
}
if (!this.items.equals(that.items)) {
return false;
}
return true;
}
/**
* Returns a clone of the plot.
*
* @return A clone.
*
* @throws CloneNotSupportedException if the cloning is not supported.
*/
@Override
public Object clone() throws CloneNotSupportedException {
DefaultBoxAndWhiskerXYDataset clone
= (DefaultBoxAndWhiskerXYDataset) super.clone();
clone.dates = new java.util.ArrayList(this.dates);
clone.items = new java.util.ArrayList(this.items);
return clone;
}
}