我想只改变移动平均线的颜色，同时保持原始数据集的颜色相同。我该怎么做？
此外，是否可以在取消JCheckbox后将图例恢复为XYZ？
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.*;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import javax.swing.Box;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
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.XYItemRenderer;
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.data.time.MovingAverage;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
import com.opencsv.CSVReader;
public class Test2 extends ApplicationFrame
{
XYSeriesCollection dataset;
JFreeChart chart;
final ChartPanel chartPanel;
final int CHART_WIDTH = 560;
final int CHART_HEIGHT = 367;
CSVReader reader;
String[] readNextLine;
XYSeries seriesX, seriesY, seriesZ;
double Time, X, Y, Z;
JPanel panel;
/**
*
* @param applicationTitle
* @throws IOException
*/
public Test2(String applicationTitle) throws IOException
{
super(applicationTitle);
chart = createChart(dataset);
chartPanel = new ChartPanel(chart);
panel = new JPanel();
this.add(chartPanel, BorderLayout.CENTER);
this.add(panel, BorderLayout.PAGE_START);
createMenuBar();
panel.add(createSmoothingPanel(), BorderLayout.PAGE_END);
panel.add(Box.createHorizontalStrut(50));
panel.add(Box.createHorizontalStrut(50));
panel.add(createSaveLoadPanel(), BorderLayout.PAGE_END);
}
/**
* @
* @return
* @throws NumberFormatException
* @throws IOException
*/
public XYDataset createDataset() throws NumberFormatException, IOException
{
dataset = new XYSeriesCollection();
try
{
reader = new CSVReader(new FileReader("data.csv")); //change to load file
//Before your while loop, set up the series you want to add to
//add to them row by row.
seriesX = new XYSeries("X");
seriesY = new XYSeries("Y");
seriesZ = new XYSeries("Z");
//read the heading row and ignore.
readNextLine = reader.readNext();
//while the string array is not empty
//go through the elements of the array where each element will contain the value
//from file for a given row.
//Turn these values into variables.
while((readNextLine = reader.readNext()) != null)
{
Time = Double.valueOf(readNextLine[0]);
X = Double.valueOf(readNextLine[1]);
Y = Double.valueOf(readNextLine[2]);
Z = Double.valueOf(readNextLine[3]);
seriesX.add(Time, X);
seriesY.add(Time, Y);
seriesZ.add(Time, Z);
}
//add the 3 series to the collection
dataset.addSeries(seriesX);
dataset.addSeries(seriesY);
dataset.addSeries(seriesZ);
}
catch (FileNotFoundException e)
{
System.out.println("File not found!");
}
return dataset;
}
/**
*
* @param dataset
* @return
* @throws NumberFormatException
* @throws IOException
*/
public JFreeChart createChart(XYDataset dataset) throws NumberFormatException, IOException
{
chart = ChartFactory.createXYLineChart(
"Acceleration vs Time", //chart title
"Time (secs)", //domain axis label
"Acceleration (g)", //range axis label
createDataset(), //data
PlotOrientation.VERTICAL, //the plot orientation
true, //legend
true, //tooltips
false); //urls
XYPlot plot = (XYPlot) chart.getPlot();
plot.getRenderer().setSeriesPaint(0, Color.RED);
plot.getRenderer().setSeriesPaint(1, Color.BLUE);
plot.getRenderer().setSeriesPaint(2, Color.GREEN);
return chart;
}
/**
*
* @return
*/
private JPanel createSmoothingPanel()
{
JPanel smoothingPanel = new JPanel();
final JCheckBox chkMovAve = new JCheckBox("Moving Average");
panel.add(chkMovAve);
chkMovAve.addItemListener(new ItemListener()
{
@Override
public void itemStateChanged(ItemEvent e)
{
if(e.getStateChange() == ItemEvent.SELECTED)
{
final XYDataset datasetMA = MovingAverage.createMovingAverage(
dataset, "-MAVG", 3 * 24 * 60 * 60 * 1000L, 0L
);
final XYPlot movingAveragePlot = (XYPlot) chart.getPlot();
movingAveragePlot.setDataset(1, datasetMA);
final XYLineAndShapeRenderer movingAverageRenderer = new XYLineAndShapeRenderer(true,false);
movingAverageRenderer.setSeriesPaint(0, Color.white);
movingAverageRenderer.setSeriesPaint(1, Color.orange);
movingAverageRenderer.setSeriesPaint(2, Color.yellow);
movingAveragePlot.setRenderer(0, movingAverageRenderer);
} else
{
XYPlot plot = (XYPlot) chart.getPlot();
plot.setDataset(1, dataset);
final XYLineAndShapeRenderer movingAverageRenderer = new XYLineAndShapeRenderer(true,false);
plot.getRenderer().setSeriesPaint(0, Color.RED);
plot.getRenderer().setSeriesPaint(1, Color.BLUE);
plot.getRenderer().setSeriesPaint(2, Color.GREEN);
}
}
});
return smoothingPanel;
}
/**
*
* @return
*/
private JPanel createSaveLoadPanel()
{
JPanel saveLoadPanel = new JPanel();
JButton saveButton = new JButton("Save");
saveButton.setToolTipText("Save");
JButton importButton = new JButton("Import");
importButton.setToolTipText("Import (csv file only)");
panel.add(saveButton);
panel.add(importButton);
return saveLoadPanel;
}
/**
*
*/
private void createMenuBar()
{
JMenuBar menubar = new JMenuBar();
JMenu file = new JMenu("File");
file.setMnemonic(KeyEvent.VK_F);
JMenuItem importMenu = new JMenuItem("Open File...");
JMenuItem saveMenu = new JMenuItem("Save");
JMenuItem eMenuItem = new JMenuItem("Exit");
eMenuItem.setMnemonic(KeyEvent.VK_E);
eMenuItem.setToolTipText("Exit application");
eMenuItem.addActionListener(new ActionListener()
{
@Override
public void actionPerformed(ActionEvent event)
{
System.exit(0);
}
});
/**
*
*/
JMenu view = new JMenu("View");
file.setMnemonic(KeyEvent.VK_G);
JMenu help = new JMenu("Help");
file.setMnemonic(KeyEvent.VK_H);
file.add(importMenu);
file.addSeparator();
file.add(saveMenu);
file.addSeparator();
file.add(eMenuItem);
menubar.add(file);
menubar.add(view);
menubar.add(help);
setJMenuBar(menubar);
}
/**
*
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException
{
final Test2 demo = new Test2("Test");
System.out.println("Processing... Ok");
demo.pack();
RefineryUtilities.centerFrameOnScreen(demo);
demo.setVisible(true);
}
}
我的数据集的前10行：
time x y z
0.003 -0.13 0.83 0.6
0.009 -0.12 0.83 0.61
0.012 -0.12 0.82 0.6
0.018 -0.13 0.81 0.61
0.021 -0.13 0.8 0.61
0.025 -0.12 0.8 0.61
0.033 -0.12 0.79 0.6
0.034 -0.11 0.79 0.6
0.039 -0.11 0.79 0.58
0.044 -0.11 0.77 0.57
答案 0 :(得分：1)
如果我理解你的问题，这应该可以解决问题：
将以下内容添加到XYLineAndShapeRenderer movingAverageRenderer = new XYLineAndShapeRenderer(true,false);
movingAverageRenderer.setSeriesPaint(0, Color.white);
movingAverageRenderer.setSeriesPaint(1, Color.orange);
movingAverageRenderer.setSeriesPaint(2, Color.yellow);
plot.setRenderer(1, movingAverageRenderer);
（请注意索引 1 ，这意味着此渲染器只会影响索引 1 的数据集，而不是索引 0 时的默认数据集：
@Override
public void itemStateChanged(ItemEvent e)
{
((XYPlot) chart.getPlot())
.setDataset(1, e.getStateChange() == ItemEvent.SELECTED ?
MovingAverage.createMovingAverage(dataset, "-MAVG", 3 * 24 * 60 * 60 * 1000L, 0L) :
null);
}
您的复选框监听器可简化为：
{{1}} （将第二个数据集设置回null将图表恢复为XYZ）