application.TrendPlot.java Source code

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Here is the source code for application.TrendPlot.java

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package application;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.XYPlot;
import org.jfree.data.time.Millisecond;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;

/**
 *
 * @author vegard
 * Klasse som lager et trendplott basert p sendte verdier
 */
public class TrendPlot {

    private ChartPanel label;
    private TimeSeries timeSeries;
    private String plotName;

    /**
     * Konstruktren kaller initialize()
     *
     * @param plotName
     * 
     */
    public TrendPlot(String data, String plotName) {

        this.plotName = plotName;
        timeSeries = new TimeSeries(data, Millisecond.class);

        initialize();
    }

    /**
     * initialiser plottet
     */
    private void initialize() {
        TimeSeriesCollection dataset = new TimeSeriesCollection(timeSeries);
        JFreeChart chart = ChartFactory.createTimeSeriesChart(plotName, "Time", "Error Value", dataset, true, true,
                false);

        final XYPlot plot = chart.getXYPlot();
        ValueAxis axis = plot.getDomainAxis();
        axis.setAutoRange(true);
        axis.setFixedAutoRange(20000.0);
        label = new ChartPanel(chart);
    }

    /**
     * Oppdaterer plottet
     * @param errorValue
     */

    public void updatePlot(double errorValue) {
        //metode i timeseries som oppdaterer plottet
        timeSeries.addOrUpdate(new Millisecond(), errorValue);

    }

    /**
     * Getter som brukes av GUI for  hente plottet
     *
     * @return
     */
    public ChartPanel getChartPanel() {
        return label;
    }

}