import java.util.*;

import org.jfree.chart.*;

import statgraphics.*;

import statgraphics.regression.lm.*;

import static statgraphics.util.Argument.*;

import statgraphics.util.*;

/**

*

* <p>Example: class LinearRegressionPlot.</p>

*/

public class LinearRegressionPlotExample

{

public static void main(String[] args)

{

double[] ydata = {58, 105, 88, 118, 117, 137, 157, 169, 149, 202};

double[] xdata = {2, 6, 8, 8, 12, 16, 20, 20, 22, 26};

double[] p1 = {0, 60};

double[] p2 = {30, 210};

String title = "Y = 60 + 5X ";

String xLabel = "Student Population";

String yLabel = "Quarterly Sales";

PlotFrame[] pf = new PlotFrame[4];

pf[0] = new PlotFrame(

"Regression Plot I",

new LinearRegressionPlot(title, xLabel, yLabel,

p1, p2, xdata, ydata).plot, 500, 270);

pf[1] = new PlotFrame("Regression Plot II",

new LinearRegressionPlot("Pizza Data", xLabel, yLabel,

p1, p2, xdata, ydata).getPlot(), 500, 270);

Hashtable argument = new Hashtable();

GraphicalAnalysis graphicalAnalysis =

new LinearRegressionPlot(argument, p1, p2, xdata, ydata).

graphicalAnalysis;

JFreeChart myPlot =

(JFreeChart) graphicalAnalysis.output.get("PLOT");

pf[2] = new PlotFrame("Regression Plot III", myPlot, 500, 270);

argument.put(TITLE, "Y = 60 + 5X ");

argument.put(XLABEL, "Student Population");

argument.put(YLABEL, "Quarterly Sales");

argument.put(DATA_NAMES, "Pizza Data");

pf[3] = new PlotFrame("Line Plot IV", new LinearRegressionPlot(

argument, p1, p2, xdata, ydata).graphicalAnalysis.plot,

500, 270);

new PlotFrameFactory().putPlotFrame(pf);

}

}

Results: