[Ccoptions-development] Altering graphs using controls

[Daniel W. <d.r...@wa...>]

This email is really to Peter but I thought I'd post to the list to keep
everyone informed.

Hi Peter,

I've been looking at the code you did to test the graphing and I've copied
it into a class for creating the inner frame holding a 'global temperature
rise' graph.  I've tried to comment the code so I don't forget what it's
doing but there is some stuff I'm not sure about or don't understand at
all... Here is what I have written:

private void createGraph() {
    // loads global CO2 data from the CSV file
    CCDataSet pastworldco2 = new CCDataSet("co2", ".GLOBAL");

    // revision point with 450 ppmv, start year of 2000, convergence year of
    // 2040 and population cutoff of 2025
    CCRevisionPoint revision = new CCRevisionPoint(450, 2000, 2040, 2025);

    // presumably a model for the contraction using the given revision
    CCContraction CCContraction1 = new CCContraction(pastworldco2,
revision);

    // get the data from 1900 to 2200 at intervals of every two years.
    CCDataSet ds = CCContraction1.model(1900, 2200, 2);
    // graphing stuff
    TimeSeriesCollection dataset = new TimeSeriesCollection();

    // what is this? If it is co2 concentrations then what is the GLOBAL co2
stuff?
    CCDataSet co2concs = new CCDataSet("global", "co2concs");
    // what does the smoothed add?
    CCDataSet smoothedco2concs = new CCDataSet("global",
"smoothedco2concs");
    CCCo2Concentrations co2conc = new CCCo2Concentrations(co2concs, ds,
        revision);
    // CO2 concentrations from 1900 to 2200?
    CCDataSet ds2 = co2conc.model(1900, 2200, 1);

    // Using the predicted CO2, get the smoothed temperature model.
    CCSmoothedTemp cct = new CCSmoothedTemp(ds2, smoothedco2concs);
    // why does it all go so wonky if i set the temperature back to 1900?
    // do we have any data on temperature rises in the past?
    CCDataSet ds3 = cct.model(2000, 2200, 1);

    TimeSeries s2 = ds3.toTimeSeries("Global Temperature Rise");

    dataset.addSeries(s2);

    dataset.setDomainIsPointsInTime(true);
    dataset.setPosition(TimeSeriesCollection.MIDDLE);

    JFreeChart chart = createChart(dataset,
                                   "Predicted Global Temperate Rise");
    ChartPanel chartPanel = new ChartPanel(chart);
    chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
    chartPanel.setMouseZoomable(true, false);
    getContentPane().add(chartPanel);
  }

If you could reply with some examples of how the control could alter the
graph and correct my comments above then that would be very useful...

Cheers,

Dan.