JFreeChart Scatter Plot Lines
我正在尝试使用JFreeChart创建一个图形，但是它没有正确的线条。它不是按我按顺序连接点，而是按照x值的顺序连接点。我正在使用ChartFactory.createScatterPlot来创建绘图，使用XYLineAndShapeRenderer来设置可见的线条。
/编辑：sscce：
package test;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.ui.ApplicationFrame;
public class PlotTest {
private XYSeriesCollection dataset;
public static void main (String[] args) {
new PlotTest();
}
public PlotTest () {
dataset = new XYSeriesCollection();
XYSeries data = new XYSeries("data");
data.add(3, 2); //Point 1
data.add(1, 1); //Point 2
data.add(4, 1); //Point 3
data.add(2, 2); //Point 4
dataset.addSeries(data);
showGraph();
}
private void showGraph() {
final JFreeChart chart = createChart(dataset);
final ChartPanel chartPanel = new ChartPanel(chart);
chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
final ApplicationFrame frame = new ApplicationFrame("Title");
frame.setContentPane(chartPanel);
frame.pack();
frame.setVisible(true);
}
private JFreeChart createChart(final XYDataset dataset) {
final JFreeChart chart = ChartFactory.createScatterPlot(
"Title", // chart title
"X", // x axis label
"Y", // y axis label
dataset, // data
PlotOrientation.VERTICAL,
true, // include legend
true, // tooltips
false // urls
);
XYPlot plot = (XYPlot) chart.getPlot();
XYLineAndShapeRenderer renderer = new XYLineAndShapeRenderer();
renderer.setSeriesLinesVisible(0, true);
plot.setRenderer(renderer);
return chart;
}
}
没有找到相关结果
已邀请:
2 个回复
篮肥炼皖
final XYSeries data = new XYSeries("data",false);屡倒雷图
返回。此外，它可能有助于知道在散点图中连接点的线应该给出什么含义。