JFreeChart散點圖在系列之間移動數據

Question

很抱歉，如果這個問題有點不具體，但是對於使用JFreeChart並且對它有一個平庸的理解，我很新。本質上，即時嘗試創建一個應用程序，描繪KMeans聚類算法一步一步散點圖與隨機生成的點。我想通過使用顏色來顯示哪些聚類點屬於該程序。當算法確定它屬於不同的集羣時，是否可以將點從一個數據集移動到另一個數據集？如果沒有，我可以得到一個什麼是更好的方式做這個建議。謝謝！

Answer 1

此示例從原始N/2項目，並將它們添加到感動每次按下按鈕。

import java.awt.BorderLayout; 
import java.awt.Color; 
import java.awt.Dimension; 
import java.awt.EventQueue; 
import java.awt.event.ActionEvent; 
import java.util.*; 
import javax.swing.AbstractAction; 
import javax.swing.JButton; 
import javax.swing.JFrame; 
import javax.swing.JPanel; 
import org.jfree.chart.*; 
import org.jfree.chart.axis.NumberAxis; 
import org.jfree.chart.axis.NumberTickUnit; 
import org.jfree.chart.plot.PlotOrientation; 
import org.jfree.chart.plot.XYPlot; 
import org.jfree.chart.renderer.xy.XYItemRenderer; 
import org.jfree.data.xy.XYDataItem; 
import org.jfree.data.xy.XYDataset; 
import org.jfree.data.xy.XYSeries; 
import org.jfree.data.xy.XYSeriesCollection; 

/** 
* @see http://stackoverflow.com/a/13794076/230513 
* @see http://stackoverflow.com/questions/8430747 
* @see http://stackoverflow.com/questions/8048652 
* @see http://stackoverflow.com/questions/7231824 
* @see http://stackoverflow.com/questions/7205742 
* @see http://stackoverflow.com/questions/7208657 
* @see http://stackoverflow.com/questions/7071057 
* @see http://stackoverflow.com/questions/8736553 
*/ 
public class ScatterAdd extends JFrame { 

    private static final int N = 8; 
    private static final int SIZE = 345; 
    private static final String title = "Scatter Add Demo"; 
    private static final Random rand = new Random(); 
    private final XYSeries series = new XYSeries("Original"); 
    private final XYSeries added = new XYSeries("Moved"); 

    public ScatterAdd(String s) { 
     super(s); 
     final ChartPanel chartPanel = createDemoPanel(); 
     chartPanel.setPreferredSize(new Dimension(SIZE, SIZE)); 
     this.add(chartPanel, BorderLayout.CENTER); 
     JPanel control = new JPanel(); 
     control.add(new JButton(new AbstractAction("Move") { 

      @Override 
      public void actionPerformed(ActionEvent e) { 
       for (int i = 0; i < N/2; i++) { 
        XYDataItem item = series.remove(0); 
        if (item != null) { 
         added.add(item); 
        } 
       } 
      } 
     })); 
     this.add(control, BorderLayout.SOUTH); 
    } 

    private ChartPanel createDemoPanel() { 
     JFreeChart jfreechart = ChartFactory.createScatterPlot(
      title, "X", "Y", createSampleData(), 
      PlotOrientation.VERTICAL, true, true, false); 
     XYPlot xyPlot = (XYPlot) jfreechart.getPlot(); 
     xyPlot.setDomainCrosshairVisible(true); 
     xyPlot.setRangeCrosshairVisible(true); 
     XYItemRenderer renderer = xyPlot.getRenderer(); 
     renderer.setSeriesPaint(0, Color.blue); 
     adjustAxis((NumberAxis) xyPlot.getDomainAxis(), true); 
     adjustAxis((NumberAxis) xyPlot.getRangeAxis(), false); 
     xyPlot.setBackgroundPaint(Color.white); 
     return new ChartPanel(jfreechart); 
    } 

    private void adjustAxis(NumberAxis axis, boolean vertical) { 
     axis.setRange(-3.0, 3.0); 
     axis.setTickUnit(new NumberTickUnit(0.5)); 
     axis.setVerticalTickLabels(vertical); 
    } 

    private XYDataset createSampleData() { 
     XYSeriesCollection xySeriesCollection = new XYSeriesCollection(); 
     for (int i = 0; i < N * N; i++) { 
      series.add(rand.nextGaussian(), rand.nextGaussian()); 
     } 
     xySeriesCollection.addSeries(series); 
     xySeriesCollection.addSeries(added); 
     return xySeriesCollection; 
    } 

    public static void main(String args[]) { 
     EventQueue.invokeLater(new Runnable() { 

      @Override 
      public void run() { 
       ScatterAdd demo = new ScatterAdd(title); 
       demo.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
       demo.pack(); 
       demo.setLocationRelativeTo(null); 
       demo.setVisible(true); 
      } 
     }); 
    } 
}