Thanks a lot for u'r Prompt Response.
here i am trying to modify the Overlaid plat demo to the regression.i've followed u'r suggestions.but, i am failed to get the second plot(i.e line containing the regression). and am also not able to define values for the X-axis.
could u please help to find out the mistake in this Application.
here is my code:
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package com.jrefinery.chart.demo;
import java.awt.Color;
import com.jrefinery.chart.*;
import com.jrefinery.chart.tooltips.TimeSeriesToolTipGenerator;
import com.jrefinery.data.*;
import com.jrefinery.date.SerialDate;
import com.jrefinery.ui.ApplicationFrame;
import com.jrefinery.ui.RefineryUtilities;
import com.jrefinery.chart.data.LinearPlotFitAlgorithm;
public class Test extends ApplicationFrame {
XYDataset data,data2;
public Test(String title) {
super(title);
XYSeries series = new XYSeries("Test Data");
series.add(1, 1.0);
series.add(2, 1.1);
series.add(3, 1.3);
series.add(4, 1.5);
series.add(5, 1.7);
series.add(6, 1.
;series.add(7, 1.9);
series.add(8, 2.0);
series.add(9, 2.1);
series.add(10,2.2);
series.add(11,2.3);
series.add(12,2.4);
series.add(12.1, 5.0);
series.add(12.3, 5.1);
series.add(12.5, 5.3);
series.add(13.4, 5.5);
series.add(13.8, 5.7);
series.add(14.1, 5.
;series.add(14.7, 5.9);
series.add(15, 6.0);
series.add(15.9, 6.1);
series.add(16,6.2);
series.add(18,6.3);
series.add(20,6.4);
data = new XYSeriesCollection(series);
double [][] my2d=
{
{1,1.0},{2,1.1},{3,1.3},{4,1.5},{5,1.7},{6,1.8},{7,1.9},{8,2.0},{9,2.1},{10,2.2},{11,2.3},{12,2.4},
{12.1,5.0},{12.3,5.1},{12.5,5.3},{13.4,5.5},{13.8,5.7},{14.1,5.8},{14.7,5.9},{15,6.0},{15.9,6.1},{16,6.2},{18,6.3},{20,6.4}
};
JFreeChart chart = createOverlaidChart();
chart.getPlot().setBackgroundPaint(Color.yellow);
ChartPanel panel = new ChartPanel(chart, true, true, true, true, true);
panel.setPreferredSize(new java.awt.Dimension(270, 270));
setContentPane(panel);
double[] result=Regression.getOLSRegression(my2d);
LineFunction2D myf=new LineFunction2D(result[0],result[1]);
data2 =DatasetUtilities.sampleFunction2D(myf,1,20,10,"regression");
}
/**
* Creates an overlaid chart.
*
* @return the chart.
*/
private JFreeChart createOverlaidChart() {
// create subplot 1...
XYDataset data1 =data;
XYDotRenderer renderer1 = new XYDotRenderer();
XYPlot subplot1 = new XYPlot(data1, null, null, renderer1);
// create subplot 2...
XYItemRenderer renderer2 = new StandardXYItemRenderer();
XYPlot subplot2 = new XYPlot(data2, null, null, renderer2);
subplot2.setSeriesPaint(0, Color.green);
// make an overlaid plot and add the subplots...
ValueAxis domainAxis = new HorizontalDateAxis("X");
ValueAxis rangeAxis = new VerticalNumberAxis("Y");
OverlaidXYPlot plot = new OverlaidXYPlot(domainAxis, rangeAxis);
plot.add(subplot1);
plot.add(subplot2);
// return a new chart containing the overlaid plot...
return new JFreeChart("Linear Regression Example", JFreeChart.DEFAULT_TITLE_FONT, plot, true);
}
/**
* Starting point for the demonstration application.
*
* @param args ignored.
*/
public static void main(String[] args) {
Test demo = new Test("Liner Regression Demo");
demo.pack();
RefineryUtilities.centerFrameOnScreen(demo);
demo.setVisible(true);
}
}
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Thanks in advance,
Kishore.