我似乎无法操纵图表本身。我无法更改大小,并且chartPanel = createChartPanel();
不断重写为chartPanel = javax.swing.panel();
我试图创建方法modificarGrafico
,但是什么也没有:
示例:http://www.flickr.com/photos/63259070@N06/6371596517/
public JPanel createChartPanel(){
DefaultPieDataset pieDataset = new DefaultPieDataset();
pieDataset.setValue("Toyota", new Integer(10));
pieDataset.setValue("Nissan", new Integer(25));
pieDataset.setValue("Hummer", new Integer(5));
pieDataset.setValue("BMW", new Integer(10));
pieDataset.setValue("Honda", new Integer(30));
pieDataset.setValue("Ford", new Integer(20));
JFreeChart chart = ChartFactory.createPieChart3D("Ventas por Marca", pieDataset, true, true, true);
return new ChartPanel(chart);
}
public void modificarGrafico(){
//JDesktopPane dtp = new JDesktopPane();
this.chartPanel.setSize(200,200);
this.chartPanel.setVisible(rootPaneCheckingEnabled);
}
最佳答案
您不必担心图表的大小,将面板的布局设置为GridBagLayout应该会有所帮助。