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Welcome to Lin's Space !
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blog名称:Lin's Space
日志总数:20
评论数量:99
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访问次数:241086
建立时间:2007年5月15日 |
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 [java]3D bar(JfreeChart)
软件技术
Great Void 发表于 2007/5/20 16:06:21 |
| import org.jfree.chart.ChartFactory;import org.jfree.chart.ChartPanel;import org.jfree.chart.JFreeChart;import org.jfree.chart.axis.CategoryAxis;import org.jfree.chart.axis.CategoryLabelPosition;import org.jfree.chart.axis.CategoryLabelPositions;import org.jfree.chart.axis.CategoryLabelWidthType;import org.jfree.chart.plot.CategoryPlot;import org.jfree.chart.plot.PlotOrientation;import org.jfree.data.category.CategoryDataset;import org.jfree.data.category.DefaultCategoryDataset;import org.jfree.text.TextBlockAnchor;import org.jfree.ui.ApplicationFrame;import org.jfree.ui.RectangleAnchor;import org.jfree.ui.RefineryUtilities;import org.jfree.ui.TextAnchor;import org.jfree.util.Log;import org.jfree.util.PrintStreamLogTarget;/** * A simple demonstration application showing how to create a horizontal 3D bar chart using data * from a {@link CategoryDataset}. * */public class BarChart3DDemo2 extends ApplicationFrame { // **************************************************************************** // * 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. * // **************************************************************************** /** * Creates a new demo. * * @param title the frame title. */ public BarChart3DDemo2(final String title) { super(title); // create the chart... final DefaultCategoryDataset dataset = new DefaultCategoryDataset(); dataset.addValue(23.0, "Series 1", "London"); dataset.addValue(14.0, "Series 1", "New York"); dataset.addValue(14.0, "Series 1", "Istanbul"); dataset.addValue(14.0, "Series 1", "Cairo"); dataset.addValue(13.0, "Series 2", "London"); dataset.addValue(19.0, "Series 2", "New York"); dataset.addValue(19.0, "Series 2", "Istanbul"); dataset.addValue(19.0, "Series 2", "Cairo"); dataset.addValue(7.0, "Series 3", "London"); dataset.addValue(9.0, "Series 3", "New York"); dataset.addValue(9.0, "Series 3", "Istanbul"); dataset.addValue(9.0, "Series 3", "Cairo"); final JFreeChart chart = createChart(dataset); // add the chart to a panel... final ChartPanel chartPanel = new ChartPanel(chart); chartPanel.setPreferredSize(new java.awt.Dimension(500, 270)); setContentPane(chartPanel); } /** * Creates a chart. * * @param dataset the dataset. * * @return The chart. */ private JFreeChart createChart(final CategoryDataset dataset) { final JFreeChart chart = ChartFactory.createBarChart3D( "3D Bar Chart Demo 2", // chart title "Category", // domain axis label "Value", // range axis label dataset, // data PlotOrientation.HORIZONTAL, // orientation true, // include legend true, // tooltips false // urls ); final CategoryPlot plot = chart.getCategoryPlot(); plot.setForegroundAlpha(1.0f); // left align the category labels... final CategoryAxis axis = plot.getDomainAxis(); final CategoryLabelPositions p = axis.getCategoryLabelPositions(); final CategoryLabelPosition left = new CategoryLabelPosition( RectangleAnchor.LEFT, TextBlockAnchor.CENTER_LEFT, TextAnchor.CENTER_LEFT, 0.0, CategoryLabelWidthType.RANGE, 0.30f ); axis.setCategoryLabelPositions(CategoryLabelPositions.replaceLeftPosition(p, left)); return chart; } /** * Starting point for the demonstration application. * * @param args ignored. */ public static void main(final String[] args) { Log.getInstance().addTarget(new PrintStreamLogTarget()); final BarChart3DDemo2 demo = new BarChart3DDemo2("3D Bar Chart Demo 2"); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); }} |
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