NBGraphDemo.java

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package statsmodel;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.function.Function2D;
import org.jfree.data.function.NormalDistributionFunction2D;
import org.jfree.data.general.DatasetUtilities;
import org.jfree.data.xy.XYDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

/**
 * This demo shows a normal distribution function.
 */
public class NBGraphDemo extends ApplicationFrame {

    /**
     * A demonstration application showing a normal distribution.
     *
     * @param title the frame title.
     */
    public NBGraphDemo(final String title) {

        super(title);
        Function2D normal = new NormalDistributionFunction2D(0.0, 1.0);
        XYDataset dataset = DatasetUtilities.sampleFunction2D(normal, -5.0, 5.0, 100, "Normal");
        final JFreeChart chart = ChartFactory.createXYLineChart(
                "XY Series Demo",
                "X",
                "Y",
                dataset,
                PlotOrientation.VERTICAL,
                true,
                true,
                false
        );

        final ChartPanel chartPanel = new ChartPanel(chart);
        chartPanel.setPreferredSize(new java.awt.Dimension(500, 270));
        setContentPane(chartPanel);

    }

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    /**
     * Starting point for the demonstration application.
     *
     * @param args ignored.
     */
    public static void main(final String[] args) {
        
         final NBGraphDemo demo = new NBGraphDemo("Normal Distribution Demo");
         demo.pack();
         RefineryUtilities.centerFrameOnScreen(demo);
         demo.setVisible(true);
        

    }

}