javaswingjfreechart
jFreechart points vanish when clicking
I have a Java 6/Swing application (yes, I know, but thats the requirement) and I need to show some polar plots. Everything works so far so good, but when I click on the plot, the plotted points vanish, even if I move the window around it might vanish. I work with netbeans, here is a dummy-code that causes the same issue
The libraries used are
- jfreechart-1.0.19.jar
- jcommon-1.0.23.jar
NewJFrame.java
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
public class NewJFrame extends javax.swing.JFrame {
private PlotHandler plotHandler;
public NewJFrame() {
initComponents();
plotHandler = new PlotHandler(jPanel1, "blub", 1);
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
jButton1 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 504, Short.MAX_VALUE)
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 409, Short.MAX_VALUE)
);
jButton1.setText("jButton1");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(36, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton1)
.addGap(217, 217, 217))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton1)
.addContainerGap())
);
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
XYSeriesCollection data;
XYSeries series;//("Bearing"+getBearingIndex(i));
data = new XYSeriesCollection();
series = new XYSeries("Bearings");
series.add(Math.random()*180/Math.PI,
Math.random());
data.addSeries(series);
plotHandler.plotData(data);
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new NewJFrame().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JPanel jPanel1;
// End of variables declaration
}
PlotHandler.java
import java.awt.BorderLayout;
import javax.swing.JPanel;
import org.jfree.data.xy.XYSeriesCollection;
public class PlotHandler {
private final JPanel jPanel;
private final String plane;
private double range;
public PlotHandler(JPanel jPanel, String plane, double range) {
this.jPanel = jPanel;
this.plane = plane;
this.range = range;
// initialize plot
this.jPanel.setLayout(new java.awt.BorderLayout());
this.jPanel.add(PolarPlotHandler.emptyPolarChart(range), BorderLayout.CENTER);
this.jPanel.validate();
}
public void plotData(XYSeriesCollection data) {
jPanel.setLayout(new java.awt.BorderLayout());
jPanel.add(PolarPlotHandler.createPolarChart(data, range), BorderLayout.CENTER);
jPanel.validate();
}
}
PolarPlotHandler.java
import java.awt.Color;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.PolarChartPanel;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.NumberTickUnit;
import org.jfree.chart.plot.PolarPlot;
import org.jfree.chart.renderer.DefaultPolarItemRenderer;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeriesCollection;
public final class PolarPlotHandler {
private PolarPlotHandler() { }
public static ChartPanel createPolarChart(XYSeriesCollection data, double range) {
final XYDataset dataset = data;
range = 200;
range = Math.ceil(range/10)*10;
range = Math.max(1, range);
final JFreeChart chart = createChart(dataset, range/1000000);
if(data.getSeriesCount()<=1 && data.getSeries(0).getItemCount()>0)
chart.removeLegend();
else {
}
ChartPanel chartPanel = new PolarChartPanel(chart);
chartPanel.setDomainZoomable(false);
chartPanel.setRangeZoomable(false);
return chartPanel;
}
private static JFreeChart createChart(final XYDataset dataset, double range) {
final JFreeChart chart = ChartFactory.createPolarChart(
"", dataset, true, true, false
);
final PolarPlot plot = (PolarPlot) chart.getPlot();
// get Axis
plot.setAngleOffset(0);
plot.setCounterClockwise(true);
plot.getAxis().setTickLabelsVisible(false);
plot.setAngleTickUnit(new NumberTickUnit(45));
((NumberAxis)plot.getAxis()).setTickUnit(new NumberTickUnit(range));
// find the maximum range
plot.getAxis().setRange(0, 2.0);
plot.getAxis().setVisible(true);
plot.setBackgroundAlpha(0.0f);
plot.setAngleGridlinePaint(Color.black);
plot.setRadiusGridlinePaint(Color.black);
final DefaultPolarItemRenderer renderer = (DefaultPolarItemRenderer) plot.getRenderer();
renderer.setSeriesFilled(2, false);
return chart;
}
public static ChartPanel emptyPolarChart() {
return emptyPolarChart(200.0);
}
public static ChartPanel emptyPolarChart(double range) {
final JFreeChart chart = createChart(new XYSeriesCollection(), range/1000000);
chart.removeLegend();
ChartPanel chartPanel = new PolarChartPanel(chart);
return chartPanel;
}
}
Solution
It looks like you're trying to update a PolarPlot by replacing the entire, enclosing ChartPanel. Instead, update the dataset's series and the listening chart panel will update itself in response. In the example below, the button's handler clears the dataset's XYSeries and adds a new, random point each time the button is clicked.
@Override
public void actionPerformed(ActionEvent e) {
series.clear();
series.add(r.nextDouble() * 360, r.nextDouble());
}
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Random;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PolarPlot;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
/** @see http://stackoverflow.com/a/36846122/230513 */
public class Test {
private final XYSeries series = new XYSeries("Series");
private final XYDataset dataset = new XYSeriesCollection(series);
public Test() {
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JFreeChart chart = ChartFactory.createPolarChart(
"Title", dataset, true, true, false);
final PolarPlot plot = (PolarPlot) chart.getPlot();
plot.setBackgroundPaint(Color.white);
plot.getAxis().setRange(0, 1);
plot.getAxis().setTickLabelsVisible(false);
plot.setAngleGridlinePaint(Color.black);
plot.setRadiusGridlinePaint(Color.black);
plot.setRadiusMinorGridlinesVisible(false);
ChartPanel chartPanel = new ChartPanel(chart) {
@Override
public Dimension getPreferredSize() {
return new Dimension(640, 480);
}
};
JButton button = new JButton("Button");
button.addActionListener(new ActionListener() {
Random r = new Random();
@Override
public void actionPerformed(ActionEvent e) {
series.clear();
series.add(r.nextDouble() * 360, r.nextDouble());
}
});
JPanel control = new JPanel(new FlowLayout(FlowLayout.RIGHT));
control.add(button);
f.add(chartPanel, BorderLayout.CENTER);
f.add(control, BorderLayout.SOUTH);
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);
}
public static void main(String args[]) {
EventQueue.invokeLater(new Runnable() {
public void run() {
Test t = new Test();
}
});
}
}
- Keep numbers which appear in both columns, in J lang
- Differentiation in J
- How to reshape an array with an arbitrary size in one dimension?
- Why is Insert (fold) right associative
- Write 4 : 'x&{.&.;: y' tacitly
- Alignment issue when printing formatted prime numbers in J language
- How can I define a verb in J that applies a different verb alternately to each atom in a list?
- How to get user input in the J programming language
- How to unbox a list of boxed lists of differing lengths in J?
- How can I fix 'noun result was required' error in J?
- In j, how can I define a verb locally in one scope and pass it to a defined adverb?
- Convert boxed array to normal array?
- Read column of CSV file as array
- Replace atom in array of strings
- What does the dyad `=` do to boxed strings?
- Index of minimum element using J
- How can I take the outer product of string vectors in J?
- Building an array of verbs in J
- Reading in multidigit command line parameter
- Amend with bond to new data shows unexpected behaviour
- How to turn a table or matrix into a (flat) list in J
- How to run dissect in J?
- How to define selection using index function in J
- How to exit the J console?
- Find 4-neighbors using J
- Writing custom verbs in J
- How do I negate a selector in J lang?
- How to use arbitrary selector in interchange in J lang?
- different result once square root is added inside tacit
- Sum of arrays with repeated indices