home | career | drupal | java | mac | mysql | perl | scala | uml | unix  

jfreechart example source code file (StatisticalBarRenderer.java)

This example jfreechart source code file (StatisticalBarRenderer.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, categoryaxis, categoryplot, geometry, io, number, paint, paint, rectangle2d, rectangle2d, rectangleedge, statisticalbarrenderer, statisticalbarrenderer, statisticalcategorydataset, statisticalcategorydataset, stroke, valueaxis

The jfreechart StatisticalBarRenderer.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.]
 *
 * ---------------------------
 * StatisticalBarRenderer.java
 * ---------------------------
 * (C) Copyright 2002-2009, by Pascal Collet and Contributors.
 *
 * Original Author:  Pascal Collet;
 * Contributor(s):   David Gilbert (for Object Refinery Limited);
 *                   Christian W. Zuckschwerdt;
 *                   Peter Kolb (patch 2497611);
 *
 * Changes
 * -------
 * 21-Aug-2002 : Version 1, contributed by Pascal Collet (DG);
 * 01-Oct-2002 : Fixed errors reported by Checkstyle (DG);
 * 24-Oct-2002 : Changes to dataset interface (DG);
 * 05-Nov-2002 : Base dataset is now TableDataset not CategoryDataset (DG);
 * 05-Feb-2003 : Updates for new DefaultStatisticalCategoryDataset (DG);
 * 25-Mar-2003 : Implemented Serializable (DG);
 * 30-Jul-2003 : Modified entity constructor (CZ);
 * 06-Oct-2003 : Corrected typo in exception message (DG);
 * 05-Nov-2004 : Modified drawItem() signature (DG);
 * 15-Jun-2005 : Added errorIndicatorPaint attribute (DG);
 * ------------- JFREECHART 1.0.x ---------------------------------------------
 * 19-May-2006 : Added support for tooltips and URLs (DG);
 * 12-Jul-2006 : Added support for item labels (DG);
 * 02-Feb-2007 : Removed author tags all over JFreeChart sources (DG);
 * 28-Aug-2007 : Fixed NullPointerException - see bug 1779941 (DG);
 * 14-Nov-2007 : Added errorIndicatorStroke, and fixed bugs with drawBarOutline
 *               and gradientPaintTransformer attributes being ignored (DG);
 * 14-Jan-2009 : Added support for seriesVisible flags (PK);
 *
 */

package org.jfree.chart.renderer.category;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.Stroke;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

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.labels.CategoryItemLabelGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.statistics.StatisticalCategoryDataset;
import org.jfree.io.SerialUtilities;
import org.jfree.ui.GradientPaintTransformer;
import org.jfree.ui.RectangleEdge;
import org.jfree.util.ObjectUtilities;
import org.jfree.util.PaintUtilities;
import org.jfree.util.PublicCloneable;

/**
 * A renderer that handles the drawing a bar plot where
 * each bar has a mean value and a standard deviation line.  The example shown
 * here is generated by the <code>StatisticalBarChartDemo1.java program
 * included in the JFreeChart Demo Collection:
 * <br>
* <img src="../../../../../images/StatisticalBarRendererSample.png" * alt="StatisticalBarRendererSample.png" /> */ public class StatisticalBarRenderer extends BarRenderer implements CategoryItemRenderer, Cloneable, PublicCloneable, Serializable { /** For serialization. */ private static final long serialVersionUID = -4986038395414039117L; /** The paint used to show the error indicator. */ private transient Paint errorIndicatorPaint; /** * The stroke used to draw the error indicators. * * @since 1.0.8 */ private transient Stroke errorIndicatorStroke; /** * Default constructor. */ public StatisticalBarRenderer() { super(); this.errorIndicatorPaint = Color.gray; this.errorIndicatorStroke = new BasicStroke(1.0f); } /** * Returns the paint used for the error indicators. * * @return The paint used for the error indicators (possibly * <code>null). * * @see #setErrorIndicatorPaint(Paint) */ public Paint getErrorIndicatorPaint() { return this.errorIndicatorPaint; } /** * Sets the paint used for the error indicators (if <code>null, * the item outline paint is used instead) and sends a * {@link RendererChangeEvent} to all registered listeners. * * @param paint the paint (<code>null permitted). * * @see #getErrorIndicatorPaint() */ public void setErrorIndicatorPaint(Paint paint) { this.errorIndicatorPaint = paint; fireChangeEvent(); } /** * Returns the stroke used to draw the error indicators. If this is * <code>null, the renderer will use the item outline stroke). * * @return The stroke (possibly <code>null). * * @see #setErrorIndicatorStroke(Stroke) * * @since 1.0.8 */ public Stroke getErrorIndicatorStroke() { return this.errorIndicatorStroke; } /** * Sets the stroke used to draw the error indicators, and sends a * {@link RendererChangeEvent} to all registered listeners. If you set * this to <code>null, the renderer will use the item outline * stroke. * * @param stroke the stroke (<code>null permitted). * * @see #getErrorIndicatorStroke() * * @since 1.0.8 */ public void setErrorIndicatorStroke(Stroke stroke) { this.errorIndicatorStroke = stroke; fireChangeEvent(); } /** * Draws the bar with its standard deviation line range for a single * (series, category) data item. * * @param g2 the graphics device. * @param state the renderer state. * @param dataArea the data area. * @param plot the plot. * @param domainAxis the domain axis. * @param rangeAxis the range axis. * @param data the data. * @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 data, int row, int column, int pass) { int visibleRow = state.getVisibleSeriesIndex(row); if (visibleRow < 0) { return; } // defensive check if (!(data instanceof StatisticalCategoryDataset)) { throw new IllegalArgumentException( "Requires StatisticalCategoryDataset."); } StatisticalCategoryDataset statData = (StatisticalCategoryDataset) data; PlotOrientation orientation = plot.getOrientation(); if (orientation == PlotOrientation.HORIZONTAL) { drawHorizontalItem(g2, state, dataArea, plot, domainAxis, rangeAxis, statData, visibleRow, row, column); } else if (orientation == PlotOrientation.VERTICAL) { drawVerticalItem(g2, state, dataArea, plot, domainAxis, rangeAxis, statData, visibleRow, row, column); } } /** * Draws an item for a plot with a horizontal orientation. * * @param g2 the graphics device. * @param state the renderer state. * @param dataArea the data area. * @param plot the plot. * @param domainAxis the domain axis. * @param rangeAxis the range axis. * @param dataset the data. * @param visibleRow the visible row index. * @param row the row index (zero-based). * @param column the column index (zero-based). */ protected void drawHorizontalItem(Graphics2D g2, CategoryItemRendererState state, Rectangle2D dataArea, CategoryPlot plot, CategoryAxis domainAxis, ValueAxis rangeAxis, StatisticalCategoryDataset dataset, int visibleRow, int row, int column) { RectangleEdge xAxisLocation = plot.getDomainAxisEdge(); // BAR Y double rectY = domainAxis.getCategoryStart(column, getColumnCount(), dataArea, xAxisLocation); int seriesCount = state.getVisibleSeriesCount() >= 0 ? state.getVisibleSeriesCount() : getRowCount(); int categoryCount = getColumnCount(); if (seriesCount > 1) { double seriesGap = dataArea.getHeight() * getItemMargin() / (categoryCount * (seriesCount - 1)); rectY = rectY + visibleRow * (state.getBarWidth() + seriesGap); } else { rectY = rectY + visibleRow * state.getBarWidth(); } // BAR X Number meanValue = dataset.getMeanValue(row, column); if (meanValue == null) { return; } double value = meanValue.doubleValue(); double base = 0.0; double lclip = getLowerClip(); double uclip = getUpperClip(); if (uclip <= 0.0) { // cases 1, 2, 3 and 4 if (value >= uclip) { return; // bar is not visible } base = uclip; if (value <= lclip) { value = lclip; } } else if (lclip <= 0.0) { // cases 5, 6, 7 and 8 if (value >= uclip) { value = uclip; } else { if (value <= lclip) { value = lclip; } } } else { // cases 9, 10, 11 and 12 if (value <= lclip) { return; // bar is not visible } base = getLowerClip(); if (value >= uclip) { value = uclip; } } RectangleEdge yAxisLocation = plot.getRangeAxisEdge(); double transY1 = rangeAxis.valueToJava2D(base, dataArea, yAxisLocation); double transY2 = rangeAxis.valueToJava2D(value, dataArea, yAxisLocation); double rectX = Math.min(transY2, transY1); double rectHeight = state.getBarWidth(); double rectWidth = Math.abs(transY2 - transY1); Rectangle2D bar = new Rectangle2D.Double(rectX, rectY, rectWidth, rectHeight); Paint itemPaint = getItemPaint(row, column); GradientPaintTransformer t = getGradientPaintTransformer(); if (t != null && itemPaint instanceof GradientPaint) { itemPaint = t.transform((GradientPaint) itemPaint, bar); } g2.setPaint(itemPaint); g2.fill(bar); // draw the outline... if (isDrawBarOutline() && state.getBarWidth() > BAR_OUTLINE_WIDTH_THRESHOLD) { Stroke stroke = getItemOutlineStroke(row, column); Paint paint = getItemOutlinePaint(row, column); if (stroke != null && paint != null) { g2.setStroke(stroke); g2.setPaint(paint); g2.draw(bar); } } // standard deviation lines Number n = dataset.getStdDevValue(row, column); if (n != null) { double valueDelta = n.doubleValue(); double highVal = rangeAxis.valueToJava2D(meanValue.doubleValue() + valueDelta, dataArea, yAxisLocation); double lowVal = rangeAxis.valueToJava2D(meanValue.doubleValue() - valueDelta, dataArea, yAxisLocation); if (this.errorIndicatorPaint != null) { g2.setPaint(this.errorIndicatorPaint); } else { g2.setPaint(getItemOutlinePaint(row, column)); } if (this.errorIndicatorStroke != null) { g2.setStroke(this.errorIndicatorStroke); } else { g2.setStroke(getItemOutlineStroke(row, column)); } Line2D line = null; line = new Line2D.Double(lowVal, rectY + rectHeight / 2.0d, highVal, rectY + rectHeight / 2.0d); g2.draw(line); line = new Line2D.Double(highVal, rectY + rectHeight * 0.25, highVal, rectY + rectHeight * 0.75); g2.draw(line); line = new Line2D.Double(lowVal, rectY + rectHeight * 0.25, lowVal, rectY + rectHeight * 0.75); g2.draw(line); } CategoryItemLabelGenerator generator = getItemLabelGenerator(row, column); if (generator != null && isItemLabelVisible(row, column)) { drawItemLabel(g2, dataset, row, column, plot, generator, bar, (value < 0.0)); } // add an item entity, if this information is being collected EntityCollection entities = state.getEntityCollection(); if (entities != null) { addItemEntity(entities, dataset, row, column, bar); } } /** * Draws an item for a plot with a vertical orientation. * * @param g2 the graphics device. * @param state the renderer state. * @param dataArea the data area. * @param plot the plot. * @param domainAxis the domain axis. * @param rangeAxis the range axis. * @param dataset the data. * @param visibleRow the visible row index. * @param row the row index (zero-based). * @param column the column index (zero-based). */ protected void drawVerticalItem(Graphics2D g2, CategoryItemRendererState state, Rectangle2D dataArea, CategoryPlot plot, CategoryAxis domainAxis, ValueAxis rangeAxis, StatisticalCategoryDataset dataset, int visibleRow, int row, int column) { RectangleEdge xAxisLocation = plot.getDomainAxisEdge(); // BAR X double rectX = domainAxis.getCategoryStart(column, getColumnCount(), dataArea, xAxisLocation); int seriesCount = state.getVisibleSeriesCount() >= 0 ? state.getVisibleSeriesCount() : getRowCount(); int categoryCount = getColumnCount(); if (seriesCount > 1) { double seriesGap = dataArea.getWidth() * getItemMargin() / (categoryCount * (seriesCount - 1)); rectX = rectX + visibleRow * (state.getBarWidth() + seriesGap); } else { rectX = rectX + visibleRow * state.getBarWidth(); } // BAR Y Number meanValue = dataset.getMeanValue(row, column); if (meanValue == null) { return; } double value = meanValue.doubleValue(); double base = 0.0; double lclip = getLowerClip(); double uclip = getUpperClip(); if (uclip <= 0.0) { // cases 1, 2, 3 and 4 if (value >= uclip) { return; // bar is not visible } base = uclip; if (value <= lclip) { value = lclip; } } else if (lclip <= 0.0) { // cases 5, 6, 7 and 8 if (value >= uclip) { value = uclip; } else { if (value <= lclip) { value = lclip; } } } else { // cases 9, 10, 11 and 12 if (value <= lclip) { return; // bar is not visible } base = getLowerClip(); if (value >= uclip) { value = uclip; } } RectangleEdge yAxisLocation = plot.getRangeAxisEdge(); double transY1 = rangeAxis.valueToJava2D(base, dataArea, yAxisLocation); double transY2 = rangeAxis.valueToJava2D(value, dataArea, yAxisLocation); double rectY = Math.min(transY2, transY1); double rectWidth = state.getBarWidth(); double rectHeight = Math.abs(transY2 - transY1); Rectangle2D bar = new Rectangle2D.Double(rectX, rectY, rectWidth, rectHeight); Paint itemPaint = getItemPaint(row, column); GradientPaintTransformer t = getGradientPaintTransformer(); if (t != null && itemPaint instanceof GradientPaint) { itemPaint = t.transform((GradientPaint) itemPaint, bar); } g2.setPaint(itemPaint); g2.fill(bar); // draw the outline... if (isDrawBarOutline() && state.getBarWidth() > BAR_OUTLINE_WIDTH_THRESHOLD) { Stroke stroke = getItemOutlineStroke(row, column); Paint paint = getItemOutlinePaint(row, column); if (stroke != null && paint != null) { g2.setStroke(stroke); g2.setPaint(paint); g2.draw(bar); } } // standard deviation lines Number n = dataset.getStdDevValue(row, column); if (n != null) { double valueDelta = n.doubleValue(); double highVal = rangeAxis.valueToJava2D(meanValue.doubleValue() + valueDelta, dataArea, yAxisLocation); double lowVal = rangeAxis.valueToJava2D(meanValue.doubleValue() - valueDelta, dataArea, yAxisLocation); if (this.errorIndicatorPaint != null) { g2.setPaint(this.errorIndicatorPaint); } else { g2.setPaint(getItemOutlinePaint(row, column)); } if (this.errorIndicatorStroke != null) { g2.setStroke(this.errorIndicatorStroke); } else { g2.setStroke(getItemOutlineStroke(row, column)); } Line2D line = null; line = new Line2D.Double(rectX + rectWidth / 2.0d, lowVal, rectX + rectWidth / 2.0d, highVal); g2.draw(line); line = new Line2D.Double(rectX + rectWidth / 2.0d - 5.0d, highVal, rectX + rectWidth / 2.0d + 5.0d, highVal); g2.draw(line); line = new Line2D.Double(rectX + rectWidth / 2.0d - 5.0d, lowVal, rectX + rectWidth / 2.0d + 5.0d, lowVal); g2.draw(line); } CategoryItemLabelGenerator generator = getItemLabelGenerator(row, column); if (generator != null && isItemLabelVisible(row, column)) { drawItemLabel(g2, dataset, row, column, plot, generator, bar, (value < 0.0)); } // add an item entity, if this information is being collected EntityCollection entities = state.getEntityCollection(); if (entities != null) { addItemEntity(entities, dataset, row, column, bar); } } /** * Tests this renderer 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 StatisticalBarRenderer)) { return false; } StatisticalBarRenderer that = (StatisticalBarRenderer) obj; if (!PaintUtilities.equal(this.errorIndicatorPaint, that.errorIndicatorPaint)) { return false; } if (!ObjectUtilities.equal(this.errorIndicatorStroke, that.errorIndicatorStroke)) { 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.errorIndicatorPaint, stream); SerialUtilities.writeStroke(this.errorIndicatorStroke, 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.errorIndicatorPaint = SerialUtilities.readPaint(stream); this.errorIndicatorStroke = SerialUtilities.readStroke(stream); } }

Other jfreechart examples (source code examples)

Here is a short list of links related to this jfreechart StatisticalBarRenderer.java source code file:



my book on functional programming

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.