Java tutorial
/* =========================================================== * JFreeChart : a free chart library for the Java(tm) platform * =========================================================== * * (C) Copyright 2000-2004, 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., 59 Temple Place, Suite 330, * Boston, MA 02111-1307, USA. * * [Java is a trademark or registered trademark of Sun Microsystems, Inc. * in the United States and other countries.] * * ------------------- * LineChartDemo5.java * ------------------- * (C) Copyright 2003, 2004, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: LineChartDemo5.java,v 1.20 2004/05/10 16:45:23 mungady Exp $ * * Changes * ------- * 23-Apr-2003 : Version 1 (DG); * */ package org.jfree.chart.demo; import java.awt.BasicStroke; import java.awt.Color; import java.awt.Polygon; import java.awt.Shape; import java.awt.geom.Rectangle2D; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.plot.DefaultDrawingSupplier; import org.jfree.chart.plot.DrawingSupplier; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.renderer.category.LineAndShapeRenderer; import org.jfree.data.category.CategoryDataset; import org.jfree.data.category.DefaultCategoryDataset; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; /** * A line chart demo showing the use of a custom drawing supplier. * */ public class LineChartDemo5 extends ApplicationFrame { /** * Creates a new demo. * * @param title the frame title. */ public LineChartDemo5(final String title) { super(title); final CategoryDataset dataset = createDataset(); final JFreeChart chart = createChart(dataset); final ChartPanel chartPanel = new ChartPanel(chart); chartPanel.setPreferredSize(new java.awt.Dimension(500, 270)); setContentPane(chartPanel); } /** * Creates a sample dataset. * * @return a sample dataset. */ private CategoryDataset createDataset() { // row keys... final String series1 = "First"; final String series2 = "Second"; final String series3 = "Third"; // column keys... final String type1 = "Type 1"; final String type2 = "Type 2"; final String type3 = "Type 3"; final String type4 = "Type 4"; final String type5 = "Type 5"; final String type6 = "Type 6"; final String type7 = "Type 7"; final String type8 = "Type 8"; // create the dataset... final DefaultCategoryDataset dataset = new DefaultCategoryDataset(); dataset.addValue(1.0, series1, type1); dataset.addValue(4.0, series1, type2); dataset.addValue(3.0, series1, type3); dataset.addValue(5.0, series1, type4); dataset.addValue(5.0, series1, type5); dataset.addValue(7.0, series1, type6); dataset.addValue(7.0, series1, type7); dataset.addValue(8.0, series1, type8); dataset.addValue(5.0, series2, type1); dataset.addValue(7.0, series2, type2); dataset.addValue(6.0, series2, type3); dataset.addValue(8.0, series2, type4); dataset.addValue(4.0, series2, type5); dataset.addValue(4.0, series2, type6); dataset.addValue(2.0, series2, type7); dataset.addValue(1.0, series2, type8); dataset.addValue(4.0, series3, type1); dataset.addValue(3.0, series3, type2); dataset.addValue(2.0, series3, type3); dataset.addValue(3.0, series3, type4); dataset.addValue(6.0, series3, type5); dataset.addValue(3.0, series3, type6); dataset.addValue(4.0, series3, type7); dataset.addValue(3.0, series3, type8); return dataset; } /** * Creates a sample chart. * * @param dataset the dataset. * * @return a chart. */ private JFreeChart createChart(final CategoryDataset dataset) { final JFreeChart chart = ChartFactory.createLineChart("Line Chart Demo 5", // chart title "Type", // domain axis label "Value", // range axis label dataset, // data PlotOrientation.VERTICAL, // orientation true, // include legend true, // tooltips false // urls ); // final StandardLegend legend = (StandardLegend) chart.getLegend(); // legend.setDisplaySeriesShapes(true); final Shape[] shapes = new Shape[3]; int[] xpoints; int[] ypoints; // right-pointing triangle xpoints = new int[] { -3, 3, -3 }; ypoints = new int[] { -3, 0, 3 }; shapes[0] = new Polygon(xpoints, ypoints, 3); // vertical rectangle shapes[1] = new Rectangle2D.Double(-2, -3, 3, 6); // left-pointing triangle xpoints = new int[] { -3, 3, 3 }; ypoints = new int[] { 0, -3, 3 }; shapes[2] = new Polygon(xpoints, ypoints, 3); final DrawingSupplier supplier = new DefaultDrawingSupplier(DefaultDrawingSupplier.DEFAULT_PAINT_SEQUENCE, DefaultDrawingSupplier.DEFAULT_OUTLINE_PAINT_SEQUENCE, DefaultDrawingSupplier.DEFAULT_STROKE_SEQUENCE, DefaultDrawingSupplier.DEFAULT_OUTLINE_STROKE_SEQUENCE, shapes); final CategoryPlot plot = chart.getCategoryPlot(); plot.setDrawingSupplier(supplier); chart.setBackgroundPaint(Color.yellow); // set the stroke for each series... plot.getRenderer().setSeriesStroke(0, new BasicStroke(2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND, 1.0f, new float[] { 10.0f, 6.0f }, 0.0f)); plot.getRenderer().setSeriesStroke(1, new BasicStroke(2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND, 1.0f, new float[] { 6.0f, 6.0f }, 0.0f)); plot.getRenderer().setSeriesStroke(2, new BasicStroke(2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND, 1.0f, new float[] { 2.0f, 6.0f }, 0.0f)); // customise the renderer... final LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer(); // renderer.setDrawShapes(true); renderer.setItemLabelsVisible(true); // renderer.setLabelGenerator(new StandardCategoryLabelGenerator()); // customise the range axis... final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis(); rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits()); rangeAxis.setAutoRangeIncludesZero(false); rangeAxis.setUpperMargin(0.12); return chart; } // **************************************************************************** // * JFREECHART DEVELOPER GUIDE * // * The JFreeChart Developer Guide, written by David Gilbert, is available * // * to purchase from Object Refinery Limited: * // * * // * http://www.object-refinery.com/jfreechart/guide.html * // * * // * Sales are used to provide funding for the JFreeChart project - please * // * support us so that we can continue developing free software. * // **************************************************************************** /** * Starting point for the demonstration application. * * @param args ignored. */ public static void main(final String[] args) { final LineChartDemo5 demo = new LineChartDemo5("Line Chart Demo 5"); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); } }