我想删除连接极图端点的直线。它不是数据集的一部分。我也尝试插入Double.NaN,但结果不满意,它创建了一些额外的连接到Double.Nan,而不是断开它。
public class PolarPanel extends JPanel {
private static final long serialVersionUID = 1L;
XYSeriesCollection dataset;
public PolarPanel() {
setLayout(new BorderLayout());
dataset = new XYSeriesCollection();
add(new JLabel("No Data Available", JLabel.CENTER), BorderLayout.CENTER);
}
public void setGraph(XYSeries polarseries) {
dataset.removeAllSeries();
dataset.addSeries(polarseries);
JFreeChart chart = ChartFactory.createPolarChart("Polar", dataset, isBackgroundSet(),
getIgnoreRepaint(),getFocusTraversalKeysEnabled());
PolarPlot plot = (PolarPlot) chart.getPlot();
var renderer = new DefaultPolarItemRenderer();
renderer.setShapesVisible(false);
NumberAxis xAxis = (NumberAxis) plot.getAxis();
xAxis.setTickUnit(new NumberTickUnit(10));
plot.setRenderer(renderer);
plot.setBackgroundPaint(Color.WHITE);
plot.setAngleGridlinesVisible(true);
plot.setAngleGridlinePaint(Color.BLACK);
plot.setRadiusGridlinesVisible(true);
plot.setRadiusGridlinePaint(Color.BLACK);
chart.getLegend().setFrame(BlockBorder.NONE);
chart.setTitle(new TextTitle("Polar", new Font("Serif", java.awt.Font.BOLD, 18)));
chart.removeLegend();
ChartPanel chartPanel = new ChartPanel(chart);
chartPanel.setBorder(BorderFactory.createEmptyBorder(15, 15, 15, 15));
chartPanel.setBackground(Color.WHITE);
BorderLayout layout = (BorderLayout) this.getLayout();
if(layout.getLayoutComponent(BorderLayout.CENTER)!=null)
this.remove(layout.getLayoutComponent(BorderLayout.CENTER));
this.add(chartPanel, BorderLayout.CENTER);
}
}
1条答案
按热度按时间3htmauhk1#
使用
DefaultPolarItemRenderer
方法setConnectFirstAndLastPoint()
来改变默认行为。从here示例开始,以下更改将生成如下所示的图表: