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jfreechart example source code file (BoxAndWhiskerRenderer.java)

This example jfreechart source code file (BoxAndWhiskerRenderer.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - jfreechart tags/keywords

awt, boxandwhiskercategorydataset, boxandwhiskercategorydataset, boxandwhiskerrenderer, categoryaxis, categorydataset, categoryitemrendererstate, categoryplot, geometry, io, number, number, outlier, outlier, paint, paint, rectangle2d, util

The jfreechart BoxAndWhiskerRenderer.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2009, 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.]
 *
 * --------------------------
 * BoxAndWhiskerRenderer.java
 * --------------------------
 * (C) Copyright 2003-2009, by David Browning and Contributors.
 *
 * Original Author:  David Browning (for the Australian Institute of Marine
 *                   Science);
 * Contributor(s):   David Gilbert (for Object Refinery Limited);
 *                   Tim Bardzil;
 *                   Rob Van der Sanden (patches 1866446 and 1888422);
 *
 * Changes
 * -------
 * 21-Aug-2003 : Version 1, contributed by David Browning (for the Australian
 *               Institute of Marine Science);
 * 01-Sep-2003 : Incorporated outlier and farout symbols for low values
 *               also (DG);
 * 08-Sep-2003 : Changed ValueAxis API (DG);
 * 16-Sep-2003 : Changed ChartRenderingInfo --> PlotRenderingInfo (DG);
 * 07-Oct-2003 : Added renderer state (DG);
 * 12-Nov-2003 : Fixed casting bug reported by Tim Bardzil (DG);
 * 13-Nov-2003 : Added drawHorizontalItem() method contributed by Tim
 *               Bardzil (DG);
 * 25-Apr-2004 : Added fillBox attribute, equals() method and added
 *               serialization code (DG);
 * 29-Apr-2004 : Changed drawing of upper and lower shadows - see bug report
 *               944011 (DG);
 * 05-Nov-2004 : Modified drawItem() signature (DG);
 * 09-Mar-2005 : Override getLegendItem() method so that legend item shapes
 *               are shown as blocks (DG);
 * 20-Apr-2005 : Generate legend labels, tooltips and URLs (DG);
 * 09-Jun-2005 : Updated equals() to handle GradientPaint (DG);
 * ------------- JFREECHART 1.0.x ---------------------------------------------
 * 12-Oct-2006 : Source reformatting and API doc updates (DG);
 * 12-Oct-2006 : Fixed bug 1572478, potential NullPointerException (DG);
 * 05-Feb-2006 : Added event notifications to a couple of methods (DG);
 * 20-Apr-2007 : Updated getLegendItem() for renderer change (DG);
 * 11-May-2007 : Added check for visibility in getLegendItem() (DG);
 * 17-May-2007 : Set datasetIndex and seriesIndex in getLegendItem() (DG);
 * 18-May-2007 : Set dataset and seriesKey for LegendItem (DG);
 * 03-Jan-2008 : Check visibility of average marker before drawing it (DG);
 * 15-Jan-2008 : Add getMaximumBarWidth() and setMaximumBarWidth()
 *               methods (RVdS);
 * 14-Feb-2008 : Fix bar position for horizontal chart, see patch
 *               1888422 (RVdS);
 * 27-Mar-2008 : Boxes should use outlinePaint/Stroke settings (DG);
 * 17-Jun-2008 : Apply legend shape, font and paint attributes (DG);
 * 02-Oct-2008 : Check item visibility in drawItem() method (DG);
 * 21-Jan-2009 : Added flags to control visibility of mean and median
 *               indicators (DG);
 */

package org.jfree.chart.renderer.category;

import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.Shape;
import java.awt.Stroke;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;

import org.jfree.chart.LegendItem;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.entity.EntityCollection;
import org.jfree.chart.event.RendererChangeEvent;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.PlotRenderingInfo;
import org.jfree.chart.renderer.Outlier;
import org.jfree.chart.renderer.OutlierList;
import org.jfree.chart.renderer.OutlierListCollection;
import org.jfree.data.Range;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.statistics.BoxAndWhiskerCategoryDataset;
import org.jfree.io.SerialUtilities;
import org.jfree.ui.RectangleEdge;
import org.jfree.util.PaintUtilities;
import org.jfree.util.PublicCloneable;

/**
 * A box-and-whisker renderer.  This renderer requires a
 * {@link BoxAndWhiskerCategoryDataset} and is for use with the
 * {@link CategoryPlot} class.  The example shown here is generated
 * by the <code>BoxAndWhiskerChartDemo1.java program included in the
 * JFreeChart Demo Collection:
 * <br>
* <img src="../../../../../images/BoxAndWhiskerRendererSample.png" * alt="BoxAndWhiskerRendererSample.png" /> */ public class BoxAndWhiskerRenderer extends AbstractCategoryItemRenderer implements Cloneable, PublicCloneable, Serializable { /** For serialization. */ private static final long serialVersionUID = 632027470694481177L; /** The color used to paint the median line and average marker. */ private transient Paint artifactPaint; /** A flag that controls whether or not the box is filled. */ private boolean fillBox; /** The margin between items (boxes) within a category. */ private double itemMargin; /** * The maximum bar width as percentage of the available space in the plot, * where 0.05 is five percent. */ private double maximumBarWidth; /** * A flag that controls whether or not the median indicator is drawn. * * @since 1.0.13 */ private boolean medianVisible; /** * A flag that controls whether or not the mean indicator is drawn. * * @since 1.0.13 */ private boolean meanVisible; /** * Default constructor. */ public BoxAndWhiskerRenderer() { this.artifactPaint = Color.black; this.fillBox = true; this.itemMargin = 0.20; this.maximumBarWidth = 1.0; this.medianVisible = true; this.meanVisible = true; setBaseLegendShape(new Rectangle2D.Double(-4.0, -4.0, 8.0, 8.0)); } /** * Returns the paint used to color the median and average markers. * * @return The paint used to draw the median and average markers (never * <code>null). * * @see #setArtifactPaint(Paint) */ public Paint getArtifactPaint() { return this.artifactPaint; } /** * Sets the paint used to color the median and average markers and sends * a {@link RendererChangeEvent} to all registered listeners. * * @param paint the paint (<code>null not permitted). * * @see #getArtifactPaint() */ public void setArtifactPaint(Paint paint) { if (paint == null) { throw new IllegalArgumentException("Null 'paint' argument."); } this.artifactPaint = paint; fireChangeEvent(); } /** * Returns the flag that controls whether or not the box is filled. * * @return A boolean. * * @see #setFillBox(boolean) */ public boolean getFillBox() { return this.fillBox; } /** * Sets the flag that controls whether or not the box is filled and sends a * {@link RendererChangeEvent} to all registered listeners. * * @param flag the flag. * * @see #getFillBox() */ public void setFillBox(boolean flag) { this.fillBox = flag; fireChangeEvent(); } /** * Returns the item margin. This is a percentage of the available space * that is allocated to the space between items in the chart. * * @return The margin. * * @see #setItemMargin(double) */ public double getItemMargin() { return this.itemMargin; } /** * Sets the item margin and sends a {@link RendererChangeEvent} to all * registered listeners. * * @param margin the margin (a percentage). * * @see #getItemMargin() */ public void setItemMargin(double margin) { this.itemMargin = margin; fireChangeEvent(); } /** * Returns the maximum bar width as a percentage of the available drawing * space. * * @return The maximum bar width. * * @see #setMaximumBarWidth(double) * * @since 1.0.10 */ public double getMaximumBarWidth() { return this.maximumBarWidth; } /** * Sets the maximum bar width, which is specified as a percentage of the * available space for all bars, and sends a {@link RendererChangeEvent} * to all registered listeners. * * @param percent the maximum Bar Width (a percentage). * * @see #getMaximumBarWidth() * * @since 1.0.10 */ public void setMaximumBarWidth(double percent) { this.maximumBarWidth = percent; fireChangeEvent(); } /** * Returns the flag that controls whether or not the mean indicator is * draw for each item. * * @return A boolean. * * @see #setMeanVisible(boolean) * * @since 1.0.13 */ public boolean isMeanVisible() { return this.meanVisible; } /** * Sets the flag that controls whether or not the mean indicator is drawn * for each item, and sends a {@link RendererChangeEvent} to all * registered listeners. * * @param visible the new flag value. * * @see #isMeanVisible() * * @since 1.0.13 */ public void setMeanVisible(boolean visible) { if (this.meanVisible == visible) { return; } this.meanVisible = visible; fireChangeEvent(); } /** * Returns the flag that controls whether or not the median indicator is * draw for each item. * * @return A boolean. * * @see #setMedianVisible(boolean) * * @since 1.0.13 */ public boolean isMedianVisible() { return this.medianVisible; } /** * Sets the flag that controls whether or not the median indicator is drawn * for each item, and sends a {@link RendererChangeEvent} to all * registered listeners. * * @param visible the new flag value. * * @see #isMedianVisible() * * @since 1.0.13 */ public void setMedianVisible(boolean visible) { this.medianVisible = visible; } /** * Returns a legend item for a series. * * @param datasetIndex the dataset index (zero-based). * @param series the series index (zero-based). * * @return The legend item (possibly <code>null). */ public LegendItem getLegendItem(int datasetIndex, int series) { CategoryPlot cp = getPlot(); if (cp == null) { return null; } // check that a legend item needs to be displayed... if (!isSeriesVisible(series) || !isSeriesVisibleInLegend(series)) { return null; } CategoryDataset dataset = cp.getDataset(datasetIndex); String label = getLegendItemLabelGenerator().generateLabel(dataset, series); String description = label; String toolTipText = null; if (getLegendItemToolTipGenerator() != null) { toolTipText = getLegendItemToolTipGenerator().generateLabel( dataset, series); } String urlText = null; if (getLegendItemURLGenerator() != null) { urlText = getLegendItemURLGenerator().generateLabel(dataset, series); } Shape shape = lookupLegendShape(series); Paint paint = lookupSeriesPaint(series); Paint outlinePaint = lookupSeriesOutlinePaint(series); Stroke outlineStroke = lookupSeriesOutlineStroke(series); LegendItem result = new LegendItem(label, description, toolTipText, urlText, shape, paint, outlineStroke, outlinePaint); result.setLabelFont(lookupLegendTextFont(series)); Paint labelPaint = lookupLegendTextPaint(series); if (labelPaint != null) { result.setLabelPaint(labelPaint); } result.setDataset(dataset); result.setDatasetIndex(datasetIndex); result.setSeriesKey(dataset.getRowKey(series)); result.setSeriesIndex(series); return result; } /** * Returns the range of values from the specified dataset that the * renderer will require to display all the data. * * @param dataset the dataset. * * @return The range. */ public Range findRangeBounds(CategoryDataset dataset) { return super.findRangeBounds(dataset, true); } /** * Initialises the renderer. This method gets called once at the start of * the process of drawing a chart. * * @param g2 the graphics device. * @param dataArea the area in which the data is to be plotted. * @param plot the plot. * @param rendererIndex the renderer index. * @param info collects chart rendering information for return to caller. * * @return The renderer state. */ public CategoryItemRendererState initialise(Graphics2D g2, Rectangle2D dataArea, CategoryPlot plot, int rendererIndex, PlotRenderingInfo info) { CategoryItemRendererState state = super.initialise(g2, dataArea, plot, rendererIndex, info); // calculate the box width CategoryAxis domainAxis = getDomainAxis(plot, rendererIndex); CategoryDataset dataset = plot.getDataset(rendererIndex); if (dataset != null) { int columns = dataset.getColumnCount(); int rows = dataset.getRowCount(); double space = 0.0; PlotOrientation orientation = plot.getOrientation(); if (orientation == PlotOrientation.HORIZONTAL) { space = dataArea.getHeight(); } else if (orientation == PlotOrientation.VERTICAL) { space = dataArea.getWidth(); } double maxWidth = space * getMaximumBarWidth(); double categoryMargin = 0.0; double currentItemMargin = 0.0; if (columns > 1) { categoryMargin = domainAxis.getCategoryMargin(); } if (rows > 1) { currentItemMargin = getItemMargin(); } double used = space * (1 - domainAxis.getLowerMargin() - domainAxis.getUpperMargin() - categoryMargin - currentItemMargin); if ((rows * columns) > 0) { state.setBarWidth(Math.min(used / (dataset.getColumnCount() * dataset.getRowCount()), maxWidth)); } else { state.setBarWidth(Math.min(used, maxWidth)); } } return state; } /** * Draw a single data item. * * @param g2 the graphics device. * @param state the renderer state. * @param dataArea the area in which the data is drawn. * @param plot the plot. * @param domainAxis the domain axis. * @param rangeAxis the range axis. * @param dataset the data (must be an instance of * {@link BoxAndWhiskerCategoryDataset}). * @param row the row index (zero-based). * @param column the column index (zero-based). * @param pass the pass index. */ public void drawItem(Graphics2D g2, CategoryItemRendererState state, Rectangle2D dataArea, CategoryPlot plot, CategoryAxis domainAxis, ValueAxis rangeAxis, CategoryDataset dataset, int row, int column, int pass) { // do nothing if item is not visible if (!getItemVisible(row, column)) { return; } if (!(dataset instanceof BoxAndWhiskerCategoryDataset)) { throw new IllegalArgumentException( "BoxAndWhiskerRenderer.drawItem() : the data should be " + "of type BoxAndWhiskerCategoryDataset only."); } PlotOrientation orientation = plot.getOrientation(); if (orientation == PlotOrientation.HORIZONTAL) { drawHorizontalItem(g2, state, dataArea, plot, domainAxis, rangeAxis, dataset, row, column); } else if (orientation == PlotOrientation.VERTICAL) { drawVerticalItem(g2, state, dataArea, plot, domainAxis, rangeAxis, dataset, row, column); } } /** * Draws the visual representation of a single data item when the plot has * a horizontal orientation. * * @param g2 the graphics device. * @param state the renderer state. * @param dataArea the area within which the plot is being drawn. * @param plot the plot (can be used to obtain standard color * information etc). * @param domainAxis the domain axis. * @param rangeAxis the range axis. * @param dataset the dataset (must be an instance of * {@link BoxAndWhiskerCategoryDataset}). * @param row the row index (zero-based). * @param column the column index (zero-based). */ public void drawHorizontalItem(Graphics2D g2, CategoryItemRendererState state, Rectangle2D dataArea, CategoryPlot plot, CategoryAxis domainAxis, ValueAxis rangeAxis, CategoryDataset dataset, int row, int column) { BoxAndWhiskerCategoryDataset bawDataset = (BoxAndWhiskerCategoryDataset) dataset; double categoryEnd = domainAxis.getCategoryEnd(column, getColumnCount(), dataArea, plot.getDomainAxisEdge()); double categoryStart = domainAxis.getCategoryStart(column, getColumnCount(), dataArea, plot.getDomainAxisEdge()); double categoryWidth = Math.abs(categoryEnd - categoryStart); double yy = categoryStart; int seriesCount = getRowCount(); int categoryCount = getColumnCount(); if (seriesCount > 1) { double seriesGap = dataArea.getHeight() * getItemMargin() / (categoryCount * (seriesCount - 1)); double usedWidth = (state.getBarWidth() * seriesCount) + (seriesGap * (seriesCount - 1)); // offset the start of the boxes if the total width used is smaller // than the category width double offset = (categoryWidth - usedWidth) / 2; yy = yy + offset + (row * (state.getBarWidth() + seriesGap)); } else { // offset the start of the box if the box width is smaller than // the category width double offset = (categoryWidth - state.getBarWidth()) / 2; yy = yy + offset; } g2.setPaint(getItemPaint(row, column)); Stroke s = getItemStroke(row, column); g2.setStroke(s); RectangleEdge location = plot.getRangeAxisEdge(); Number xQ1 = bawDataset.getQ1Value(row, column); Number xQ3 = bawDataset.getQ3Value(row, column); Number xMax = bawDataset.getMaxRegularValue(row, column); Number xMin = bawDataset.getMinRegularValue(row, column); Shape box = null; if (xQ1 != null && xQ3 != null && xMax != null && xMin != null) { double xxQ1 = rangeAxis.valueToJava2D(xQ1.doubleValue(), dataArea, location); double xxQ3 = rangeAxis.valueToJava2D(xQ3.doubleValue(), dataArea, location); double xxMax = rangeAxis.valueToJava2D(xMax.doubleValue(), dataArea, location); double xxMin = rangeAxis.valueToJava2D(xMin.doubleValue(), dataArea, location); double yymid = yy + state.getBarWidth() / 2.0; // draw the upper shadow... g2.draw(new Line2D.Double(xxMax, yymid, xxQ3, yymid)); g2.draw(new Line2D.Double(xxMax, yy, xxMax, yy + state.getBarWidth())); // draw the lower shadow... g2.draw(new Line2D.Double(xxMin, yymid, xxQ1, yymid)); g2.draw(new Line2D.Double(xxMin, yy, xxMin, yy + state.getBarWidth())); // draw the box... box = new Rectangle2D.Double(Math.min(xxQ1, xxQ3), yy, Math.abs(xxQ1 - xxQ3), state.getBarWidth()); if (this.fillBox) { g2.fill(box); } g2.setStroke(getItemOutlineStroke(row, column)); g2.setPaint(getItemOutlinePaint(row, column)); g2.draw(box); } // draw mean - SPECIAL AIMS REQUIREMENT... g2.setPaint(this.artifactPaint); double aRadius = 0; // average radius if (this.meanVisible) { Number xMean = bawDataset.getMeanValue(row, column); if (xMean != null) { double xxMean = rangeAxis.valueToJava2D(xMean.doubleValue(), dataArea, location); aRadius = state.getBarWidth() / 4; // here we check that the average marker will in fact be // visible before drawing it... if ((xxMean > (dataArea.getMinX() - aRadius)) && (xxMean < (dataArea.getMaxX() + aRadius))) { Ellipse2D.Double avgEllipse = new Ellipse2D.Double(xxMean - aRadius, yy + aRadius, aRadius * 2, aRadius * 2); g2.fill(avgEllipse); g2.draw(avgEllipse); } } } // draw median... if (this.medianVisible) { Number xMedian = bawDataset.getMedianValue(row, column); if (xMedian != null) { double xxMedian = rangeAxis.valueToJava2D(xMedian.doubleValue(), dataArea, location); g2.draw(new Line2D.Double(xxMedian, yy, xxMedian, yy + state.getBarWidth())); } } // collect entity and tool tip information... if (state.getInfo() != null && box != null) { EntityCollection entities = state.getEntityCollection(); if (entities != null) { addItemEntity(entities, dataset, row, column, box); } } } /** * Draws the visual representation of a single data item when the plot has * a vertical orientation. * * @param g2 the graphics device. * @param state the renderer state. * @param dataArea the area within which the plot is being drawn. * @param plot the plot (can be used to obtain standard color information * etc). * @param domainAxis the domain axis. * @param rangeAxis the range axis. * @param dataset the dataset (must be an instance of * {@link BoxAndWhiskerCategoryDataset}). * @param row the row index (zero-based). * @param column the column index (zero-based). */ public void drawVerticalItem(Graphics2D g2, CategoryItemRendererState state, Rectangle2D dataArea, CategoryPlot plot, CategoryAxis domainAxis, ValueAxis rangeAxis, CategoryDataset dataset, int row, int column) { BoxAndWhiskerCategoryDataset bawDataset = (BoxAndWhiskerCategoryDataset) dataset; double categoryEnd = domainAxis.getCategoryEnd(column, getColumnCount(), dataArea, plot.getDomainAxisEdge()); double categoryStart = domainAxis.getCategoryStart(column, getColumnCount(), dataArea, plot.getDomainAxisEdge()); double categoryWidth = categoryEnd - categoryStart; double xx = categoryStart; int seriesCount = getRowCount(); int categoryCount = getColumnCount(); if (seriesCount > 1) { double seriesGap = dataArea.getWidth() * getItemMargin() / (categoryCount * (seriesCount - 1)); double usedWidth = (state.getBarWidth() * seriesCount) + (seriesGap * (seriesCount - 1)); // offset the start of the boxes if the total width used is smaller // than the category width double offset = (categoryWidth - usedWidth) / 2; xx = xx + offset + (row * (state.getBarWidth() + seriesGap)); } else { // offset the start of the box if the box width is smaller than the // category width double offset = (categoryWidth - state.getBarWidth()) / 2; xx = xx + offset; } double yyAverage = 0.0; double yyOutlier; Paint itemPaint = getItemPaint(row, column); g2.setPaint(itemPaint); Stroke s = getItemStroke(row, column); g2.setStroke(s); double aRadius = 0; // average radius RectangleEdge location = plot.getRangeAxisEdge(); Number yQ1 = bawDataset.getQ1Value(row, column); Number yQ3 = bawDataset.getQ3Value(row, column); Number yMax = bawDataset.getMaxRegularValue(row, column); Number yMin = bawDataset.getMinRegularValue(row, column); Shape box = null; if (yQ1 != null && yQ3 != null && yMax != null && yMin != null) { double yyQ1 = rangeAxis.valueToJava2D(yQ1.doubleValue(), dataArea, location); double yyQ3 = rangeAxis.valueToJava2D(yQ3.doubleValue(), dataArea, location); double yyMax = rangeAxis.valueToJava2D(yMax.doubleValue(), dataArea, location); double yyMin = rangeAxis.valueToJava2D(yMin.doubleValue(), dataArea, location); double xxmid = xx + state.getBarWidth() / 2.0; // draw the upper shadow... g2.draw(new Line2D.Double(xxmid, yyMax, xxmid, yyQ3)); g2.draw(new Line2D.Double(xx, yyMax, xx + state.getBarWidth(), yyMax)); // draw the lower shadow... g2.draw(new Line2D.Double(xxmid, yyMin, xxmid, yyQ1)); g2.draw(new Line2D.Double(xx, yyMin, xx + state.getBarWidth(), yyMin)); // draw the body... box = new Rectangle2D.Double(xx, Math.min(yyQ1, yyQ3), state.getBarWidth(), Math.abs(yyQ1 - yyQ3)); if (this.fillBox) { g2.fill(box); } g2.setStroke(getItemOutlineStroke(row, column)); g2.setPaint(getItemOutlinePaint(row, column)); g2.draw(box); } g2.setPaint(this.artifactPaint); // draw mean - SPECIAL AIMS REQUIREMENT... if (this.meanVisible) { Number yMean = bawDataset.getMeanValue(row, column); if (yMean != null) { yyAverage = rangeAxis.valueToJava2D(yMean.doubleValue(), dataArea, location); aRadius = state.getBarWidth() / 4; // here we check that the average marker will in fact be // visible before drawing it... if ((yyAverage > (dataArea.getMinY() - aRadius)) && (yyAverage < (dataArea.getMaxY() + aRadius))) { Ellipse2D.Double avgEllipse = new Ellipse2D.Double( xx + aRadius, yyAverage - aRadius, aRadius * 2, aRadius * 2); g2.fill(avgEllipse); g2.draw(avgEllipse); } } } // draw median... if (this.medianVisible) { Number yMedian = bawDataset.getMedianValue(row, column); if (yMedian != null) { double yyMedian = rangeAxis.valueToJava2D( yMedian.doubleValue(), dataArea, location); g2.draw(new Line2D.Double(xx, yyMedian, xx + state.getBarWidth(), yyMedian)); } } // draw yOutliers... double maxAxisValue = rangeAxis.valueToJava2D( rangeAxis.getUpperBound(), dataArea, location) + aRadius; double minAxisValue = rangeAxis.valueToJava2D( rangeAxis.getLowerBound(), dataArea, location) - aRadius; g2.setPaint(itemPaint); // draw outliers double oRadius = state.getBarWidth() / 3; // outlier radius List outliers = new ArrayList(); OutlierListCollection outlierListCollection = new OutlierListCollection(); // From outlier array sort out which are outliers and put these into a // list If there are any farouts, set the flag on the // OutlierListCollection List yOutliers = bawDataset.getOutliers(row, column); if (yOutliers != null) { for (int i = 0; i < yOutliers.size(); i++) { double outlier = ((Number) yOutliers.get(i)).doubleValue(); Number minOutlier = bawDataset.getMinOutlier(row, column); Number maxOutlier = bawDataset.getMaxOutlier(row, column); Number minRegular = bawDataset.getMinRegularValue(row, column); Number maxRegular = bawDataset.getMaxRegularValue(row, column); if (outlier > maxOutlier.doubleValue()) { outlierListCollection.setHighFarOut(true); } else if (outlier < minOutlier.doubleValue()) { outlierListCollection.setLowFarOut(true); } else if (outlier > maxRegular.doubleValue()) { yyOutlier = rangeAxis.valueToJava2D(outlier, dataArea, location); outliers.add(new Outlier(xx + state.getBarWidth() / 2.0, yyOutlier, oRadius)); } else if (outlier < minRegular.doubleValue()) { yyOutlier = rangeAxis.valueToJava2D(outlier, dataArea, location); outliers.add(new Outlier(xx + state.getBarWidth() / 2.0, yyOutlier, oRadius)); } Collections.sort(outliers); } // Process outliers. Each outlier is either added to the // appropriate outlier list or a new outlier list is made for (Iterator iterator = outliers.iterator(); iterator.hasNext();) { Outlier outlier = (Outlier) iterator.next(); outlierListCollection.add(outlier); } for (Iterator iterator = outlierListCollection.iterator(); iterator.hasNext();) { OutlierList list = (OutlierList) iterator.next(); Outlier outlier = list.getAveragedOutlier(); Point2D point = outlier.getPoint(); if (list.isMultiple()) { drawMultipleEllipse(point, state.getBarWidth(), oRadius, g2); } else { drawEllipse(point, oRadius, g2); } } // draw farout indicators if (outlierListCollection.isHighFarOut()) { drawHighFarOut(aRadius / 2.0, g2, xx + state.getBarWidth() / 2.0, maxAxisValue); } if (outlierListCollection.isLowFarOut()) { drawLowFarOut(aRadius / 2.0, g2, xx + state.getBarWidth() / 2.0, minAxisValue); } } // collect entity and tool tip information... if (state.getInfo() != null && box != null) { EntityCollection entities = state.getEntityCollection(); if (entities != null) { addItemEntity(entities, dataset, row, column, box); } } } /** * Draws a dot to represent an outlier. * * @param point the location. * @param oRadius the radius. * @param g2 the graphics device. */ private void drawEllipse(Point2D point, double oRadius, Graphics2D g2) { Ellipse2D dot = new Ellipse2D.Double(point.getX() + oRadius / 2, point.getY(), oRadius, oRadius); g2.draw(dot); } /** * Draws two dots to represent the average value of more than one outlier. * * @param point the location * @param boxWidth the box width. * @param oRadius the radius. * @param g2 the graphics device. */ private void drawMultipleEllipse(Point2D point, double boxWidth, double oRadius, Graphics2D g2) { Ellipse2D dot1 = new Ellipse2D.Double(point.getX() - (boxWidth / 2) + oRadius, point.getY(), oRadius, oRadius); Ellipse2D dot2 = new Ellipse2D.Double(point.getX() + (boxWidth / 2), point.getY(), oRadius, oRadius); g2.draw(dot1); g2.draw(dot2); } /** * Draws a triangle to indicate the presence of far-out values. * * @param aRadius the radius. * @param g2 the graphics device. * @param xx the x coordinate. * @param m the y coordinate. */ private void drawHighFarOut(double aRadius, Graphics2D g2, double xx, double m) { double side = aRadius * 2; g2.draw(new Line2D.Double(xx - side, m + side, xx + side, m + side)); g2.draw(new Line2D.Double(xx - side, m + side, xx, m)); g2.draw(new Line2D.Double(xx + side, m + side, xx, m)); } /** * Draws a triangle to indicate the presence of far-out values. * * @param aRadius the radius. * @param g2 the graphics device. * @param xx the x coordinate. * @param m the y coordinate. */ private void drawLowFarOut(double aRadius, Graphics2D g2, double xx, double m) { double side = aRadius * 2; g2.draw(new Line2D.Double(xx - side, m - side, xx + side, m - side)); g2.draw(new Line2D.Double(xx - side, m - side, xx, m)); g2.draw(new Line2D.Double(xx + side, m - side, xx, m)); } /** * Tests this renderer for equality with an arbitrary object. * * @param obj the object (<code>null permitted). * * @return <code>true or false. */ public boolean equals(Object obj) { if (obj == this) { return true; } if (!(obj instanceof BoxAndWhiskerRenderer)) { return false; } BoxAndWhiskerRenderer that = (BoxAndWhiskerRenderer) obj; if (this.fillBox != that.fillBox) { return false; } if (this.itemMargin != that.itemMargin) { return false; } if (this.maximumBarWidth != that.maximumBarWidth) { return false; } if (this.meanVisible != that.meanVisible) { return false; } if (this.medianVisible != that.medianVisible) { return false; } if (!PaintUtilities.equal(this.artifactPaint, that.artifactPaint)) { return false; } return super.equals(obj); } /** * Provides serialization support. * * @param stream the output stream. * * @throws IOException if there is an I/O error. */ private void writeObject(ObjectOutputStream stream) throws IOException { stream.defaultWriteObject(); SerialUtilities.writePaint(this.artifactPaint, stream); } /** * Provides serialization support. * * @param stream the input stream. * * @throws IOException if there is an I/O error. * @throws ClassNotFoundException if there is a classpath problem. */ private void readObject(ObjectInputStream stream) throws IOException, ClassNotFoundException { stream.defaultReadObject(); this.artifactPaint = SerialUtilities.readPaint(stream); } }

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