Showing total time in seconds on TimeSeries JFreeChart

Question

I am using TimeSeries jfreechart to show network performance.I want to show total time passed in seconds but it showing only seconds from 0 to 59 and then reset seconds to 0 again.I have to show data for last 120 seconds.

Here is the code : This function is used to create chart:

private JFreeChart createChart(XYDataset xydataset) {

    result = ChartFactory.createTimeSeriesChart("admin0", "", "MBytes/S", xydataset, true, true, true);
    TextTitle objTitle = new TextTitle("admin0", new Font("Verdana", Font.BOLD, 12));
    result.setTitle(objTitle);

        final XYPlot plot = result.getXYPlot();
        plot.setDomainGridlinesVisible(true);
        plot.setRangeGridlinesVisible(true);
        plot.setBackgroundPaint(Color.WHITE);
        plot.setRangeGridlinePaint(Color.GRAY);
        plot.setDomainGridlinePaint(Color.GRAY);


       DateAxis xaxis = (DateAxis)plot.getDomainAxis();
        xaxis.setAutoRange(true); ////set true to move graph with time.
        xaxis.setFixedAutoRange(120000.0);
        xaxis.setTickUnit(new DateTickUnit(DateTickUnit.SECOND, 15, new SimpleDateFormat("ss")));


        NumberAxis range = (NumberAxis) plot.getRangeAxis();///y-Axis
        range.setRange(0.0, 1.0);
        range.setTickUnit(new NumberTickUnit(0.2));

        XYItemRenderer renderer = plot.getRenderer();
        renderer.setSeriesPaint(0, Color.RED);
        renderer.setSeriesPaint(1, Color.GREEN);

        return result;

}

And here is the code for creating dataset:

  private XYDataset createAdmin0DatasetTest() {

     TimeSeriesCollection dataset = new TimeSeriesCollection();

    try
    {

     if(performanceData != null)
     {
         long speed = 0;
         double recieveRate = 0;
         double sendRate = 0;
         long timeinMilli = 0;
         long devider = 4294967296l;
         long snapTime = 0;

         Vector admin0Vec = (Vector)this.performanceData.get("admin0");
            if(admin0Vec != null && admin0Vec.size() > 0)
            {
                Vector innerVec = (Vector)admin0Vec.get(0);             
                recieveRate = Long.parseLong(innerVec.get(2).toString());
                sendRate = Long.parseLong(innerVec.get(1).toString());

                timeinMilli = Long.parseLong(innerVec.get(0).toString());

                }catch(Exception ex)
                {
                    System.out.println("Exception in adding same values");
                }


                for(int i  = 1 ; i < admin0Vec.size() ; i++)
                {
                    innerVec = (Vector)admin0Vec.get(i);                
                    recieveRate = Long.parseLong(innerVec.get(2).toString());
                    sendRate = Long.parseLong(innerVec.get(1).toString());
                    timeinMilli = Long.parseLong(innerVec.get(0).toString());
                    try
                    {
                        this.adminRecieve.addOrUpdate(new Second(new Date(timeinMilli)), recieveRate);
                        this.adminSend.addOrUpdate(new Second(new Date(timeinMilli)), sendRate);

                    }catch(Exception ex)
                    {
                        System.out.println("Exception in adding same values");
                        //ex.printStackTrace();
                    }


                }
                dataset = new TimeSeriesCollection(this.adminRecieve);
                dataset.addSeries(adminSend);

            }
     }
     }catch(Exception ex)
     {
         ex.printStackTrace();
     }

  return dataset;
}

Please help me out

Answer 1

Hint:

You are using DateAxis for your domain axis and render it as seconds, so surely it will only display the seconds-part of the data without computing any totals. Moreover, it does not have to start at zero and will only display 120 seconds worth of data.

What you want is not a time series, i.e. numbers vs. time, but a data series of numbers vs. numbers (elapsed seconds). So construct it in that way and use NumberAxis for the domain.

Note: The above is for really showing the total elapsed time, e.g. for data between seconds 480 and 600 the labels will be for example 480, 500, 520, 540, 560, 580, 600 (i.e. total, as asked in the title, since some moment). If the question is to have static labels, e.g. -120, -100, -80, -60, -40, -20, 0, with moving data then setting ticks and labels on the axis needs to be done differently.