我想使用饼图和半圆环图的组合来创建仪表图。附上预期的图像。
有人可以帮我修改附加的代码以获得预期的结果吗?附上示例代码,改编自here https://stackoverflow.com/a/69473975/230513:
import java.awt.Color;
import java.awt.Dimension;
import java.io.File;
import java.io.IOException;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.OverlayLayout;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.ChartUtils;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.RingPlot;
import org.jfree.chart.plot.dial.DialPlot;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.general.PieDataset;
public class RingChartTest {
private static final String INVISIBLE = "have_a_look_on_me_if_you_can_xD";
private static java.awt.Color whiteColorAlphaChannel = new java.awt.Color(255, 255, 255, 0);
private static PieDataset createDataset() {
DefaultPieDataset dataset = new DefaultPieDataset();
dataset.setValue("Safari", 40);
dataset.setValue("Safari1", 50);
dataset.setValue("Safari2", 90);
dataset.setValue(INVISIBLE, 180);
return dataset;
}
private static JFreeChart createChart(PieDataset dataset) {
JFreeChart chart = ChartFactory.createRingChart("Overall Performance", dataset, false, false, false);
RingPlot plot = (RingPlot) chart.getPlot();
plot.setStartAngle(180);
plot.setCircular(true);
plot.setSimpleLabels(true);
plot.setSectionDepth(0.2);
plot.setBackgroundPaint(Color.WHITE);
plot.setSeparatorsVisible(false);
Color invisible = new Color(0xffffff, true);
plot.setSectionPaint(INVISIBLE, whiteColorAlphaChannel); // 180° alpha invisible
plot.setSectionOutlinePaint(INVISIBLE, whiteColorAlphaChannel); // 180° alpha invisible
plot.setShadowPaint(null);
plot.setLabelGenerator(null);
plot.setSectionOutlinesVisible(false);
return chart;
}
public JPanel createDemoPanel() {
JFreeChart jfreechart = createChart(createDataset());
ChartPanel chartPanel = new ChartPanel(jfreechart) {
@Override
public Dimension getPreferredSize() {
return new Dimension(500, 400);
}
};
chartPanel.setLayout(new OverlayLayout(chartPanel));
JLabel label = new JLabel("BrowserShare");
label.setFont(label.getFont().deriveFont(48.0f));
label.setHorizontalAlignment(JLabel.CENTER);
label.setVerticalAlignment(JLabel.CENTER);
label.setAlignmentX(0.5f);
label.setAlignmentY(0.75f);
label.setOpaque(false);
label.setBackground(Color.LIGHT_GRAY);
chartPanel.add(label);
return chartPanel;
}
public static void main(String args[]) {
PieDataset pieDataSet = createDataset();
JFreeChart jFreeChart = createChart(pieDataSet);
String filename1 = "C://Users//136965//Desktop//gauge_nut.jpg";
try {
ChartUtils.saveChartAsJPEG(new File(filename1), jFreeChart, 500, 400);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
The graph created by the above code is
我尝试使用 JFreeChart 库创建的图表如下: