Problems !! Urgent help required!

[Gaurav Kathotia]

Hello David
I am trying to plot a CombinedPlot of two TimeSeries Plots both of which are updated by two threads( or perhaps updated by mouse clicks ).
But while my chart's X-axis moves,the plots are not being shown as plotted( i:e there is no red line graph being generated).Moreover, after some time the X-AXIS'S leftmost point remains static while the rightmost points keep huddling together. The statement
System.out.println("Now = "+now.toString());
does show the output at Dos Window though.
could you please guide me regarding this as this is very very urgent.

N.B: What is a crossHair?



import java.awt.*;
import java.awt.event.*;
import java.awt.BorderLayout;
import javax.swing.*;
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.event.*;
import com.jrefinery.data.BasicTimeSeries;
import com.jrefinery.data.TimeSeriesCollection;
import com.jrefinery.data.Millisecond;
import com.jrefinery.ui.ApplicationFrame;
import com.jrefinery.chart.combination.*;
import com.jrefinery.chart.ChartFactory;
import com.jrefinery.chart.JFreeChart;
import com.jrefinery.chart.ValueAxis;
import com.jrefinery.chart.JFreeChartPanel;
import com.jrefinery.chart.*;
import com.jrefinery.data.*;
import com.jrefinery.date.*;
import com.jrefinery.chart.data.*;

class SessionLogger implements Runnable {

public void run(){

while(true){
try{
Thread.sleep(500);
}
catch(Exception e){}
}
}//end run
}//end SessionLogger

class ResponseLogger implements Runnable {
public void run(){

while(true){
try{
Thread.sleep(500);
}
catch(Exception e){}
}
}//end run
}//end ResponseLogger

public class LineLogger extends ApplicationFrame implements ActionListener
{
CombinedChart chartToCombine;
JFreeChart chart=null;
TimeSeriesCollection dataset;
BasicTimeSeries series;
protected double lastValue = 100.0;

public LineLogger()
{
series = new BasicTimeSeries("Random Data", Millisecond.class);
dataset = new TimeSeriesCollection(series);

ValueAxis timeAxis=new HorizontalDateAxis("domain");
timeAxis.setAutoRange(true);
timeAxis.setFixedAutoRange(60000.0);

NumberAxis[] valueAxis = new NumberAxis[2];
for (int i=0; i<valueAxis.length; i++) {
valueAxis = new VerticalNumberAxis();
valueAxis.setAutoRangeIncludesZero(false);
valueAxis.setCrosshairVisible(false);

}

CombinedPlot combinedPlot=new CombinedPlot(timeAxis,CombinedPlot.VERTICAL);
chartToCombine=ChartFactory.createCombinableTimeSeriesChart(timeAxis,valueAxis[0],dataset);
combinedPlot.add(chartToCombine);
chartToCombine=ChartFactory.createCombinableTimeSeriesChart(timeAxis,valueAxis[1],dataset);
combinedPlot.add(chartToCombine);
combinedPlot.adjustPlots();
chart=new JFreeChart(dataset,combinedPlot,"LINELOGGER",JFreeChart.DEFAULT_TITLE_FONT,true);


JPanel content = new JPanel(new BorderLayout());
JButton button = new JButton("Add New Data Item");
button.setActionCommand("ADD_DATA");
button.addActionListener(this);
JFreeChartPanel chartPanel = new JFreeChartPanel(chart);
content.add(chartPanel);
content.add(button,BorderLayout.SOUTH);
this.setContentPane(content);
}


public void actionPerformed(ActionEvent e) {
if (e.getActionCommand().equals("ADD_DATA")) {
double factor = 0.9 + 0.2*Math.random();
this.lastValue = lastValue*factor;
Millisecond now = new Millisecond();
System.out.println("Now = "+now.toString());
this.series.add(new Millisecond(), lastValue);
}
}

public static void main(String args[])
{

LineLogger linelogger=new LineLogger();
linelogger.pack();
linelogger.setVisible(true);
Thread t1=new Thread(new SessionLogger());
Thread t2=new Thread(new ResponseLogger());
t1.setDaemon(false);
t2.setDaemon(false);
t1.start();
t2.start();
}

}//end LineLogger

[Gaurav Kathotia]

Is it because i haven't used CombinedDataset?
If so, could you help me as to how to use it?
Thanks in advance
Gaurav Kathotia

[Nico]

There is an example in the JFreeChartDemo, in the displayOverlaidChart() method for instance

[Gaurav Kathotia]

Hello
I am still not getting any visible plot. There is only a moving x-axis , that too stops moving from the left side after some time.
Is there any other way to implement the DynamicDataDemo on
a combined plot of two time series charts updated by either threads or
mouse clicks?
This is required urgently , so any help will be greatly appreciated.
Gaurav Kathotia

[Isabelle Gheysens]

Hello,

I have the same problem! I constructed a vertically combined graph consisting of 2 dynamic TimeSeriesCharts. Initially my dataset contains one value. Each 10 seconds this dataset is updated.
I only see a moving x axis, the y axis' range goes from 0 to 1 and I see no data at all.

Does somebody had a solution for this problem? Is it a bug or am I doing something wrong? It is quite urgent...

Thanx

Isabelle

(PIDDataset extends AbstractSeriesDataset implements XYDataset...)

private JFreeChartPanel getChartPanel(PIDDataset dataset) {
SubSeriesDataset instant = new SubSeriesDataset(dataset, 0);
SubSeriesDataset predicted = new SubSeriesDataset(dataset, 1);
SubSeriesDataset pOut = new SubSeriesDataset(dataset, 2);
SubSeriesDataset pIn = new SubSeriesDataset(dataset, 3);
SubSeriesDataset energy = new SubSeriesDataset(dataset, 4);

ValueAxis xAxis = new HorizontalDateAxis("Time");
xAxis.setTickMarksVisible(true);
xAxis.setCrosshairVisible(false);
NumberAxis yAxis1 = new VerticalNumberAxis("kW");
yAxis1.setCrosshairVisible(false);
NumberAxis yAxis2 = new VerticalNumberAxis("kWh");
yAxis2.setCrosshairVisible(false);

CombinedDataset data1 = new CombinedDataset(new SeriesDataset[] {instant, predicted, pOut, pIn} );
CombinedDataset data2 = new CombinedDataset(new SeriesDataset[] {energy} );

CombinedPlot combinedPlot = new CombinedPlot(xAxis, CombinedPlot.VERTICAL);
combinedPlot.add(ChartFactory.createCombinableTimeSeriesChart(xAxis, yAxis1, data1), 1);
combinedPlot.add(ChartFactory.createCombinableTimeSeriesChart(xAxis, yAxis2, data2), 1);

combinedPlot.adjustPlots();
JFreeChart chart = new JFreeChart(dataset, combinedPlot, "PID", JFreeChart.DEFAULT_TITLE_FONT, true);


return new JFreeChartPanel(chart);
}

[Bill Kelemen]

Hi Isabelle,

Looks like we have a bug somewhere. I can't test your example easily without the rest of your code, so I did some tests with the JFreeChartDemo dynamic combined charts demo. I modified the SampleXYDataset class to vary the y-axis range, as well as the number of values in the x-axis during the test. From the four combined charts, only the third one (the overlaid chart) was updating correctly the y-axis. Therefore, you may want to test using the following code to create the charts (wrapping a normal TimeSeriesChart inside an OverlaidPlot):


CombinedPlot combinedPlot = new CombinedPlot(xAxis, CombinedPlot.VERTICAL);

OverlaidPlot overlaidPlot;
CombinedChart chartToCombine;

// add first chart as an overlaid chart
overlaidPlot = new OverlaidPlot(xAxis, yAxis1);
overlaidPlot.add(ChartFactory.createCombinableTimeSeriesChart(xAxis, yAxis1, data1));
chartToCombine = ChartFactory.createCombinableChart(data1, overlaidPlot);
combinedPlot.add(chartToCombine);

// add second chart as an overlaid chart
overlaidPlot = new OverlaidPlot(xAxis, yAxis2);
overlaidPlot.add(ChartFactory.createCombinableTimeSeriesChart(xAxis, yAxis2, data2));
chartToCombine = ChartFactory.createCombinableChart(data2, overlaidPlot);
combinedPlot.add(chartToCombine);


as a replacement to your code:


CombinedPlot combinedPlot = new CombinedPlot(xAxis, CombinedPlot.VERTICAL);
combinedPlot.add(ChartFactory.createCombinableTimeSeriesChart(xAxis, yAxis1, data1), 1);
combinedPlot.add(ChartFactory.createCombinableTimeSeriesChart(xAxis, yAxis2, data2), 1);


If this doesn't work, you can email me a sample file that I can run and debug.

Regards,
Bill

[Isabelle Gheysens]

Thanx Bill for your suggestion to use overlaid charts!

Greetings,

Isabelle