import hep.aida.*;

public class jaida_FitDataPointSet {

   public static void main(String[] argv) {    

      IAnalysisFactory     af     = IAnalysisFactory.create();
      ITree                tree   = af.createTreeFactory().create();
      IDataPointSetFactory dpsf   = af.createDataPointSetFactory(tree);
      IFunctionFactory     funcF  = af.createFunctionFactory(tree);
      IFitFactory          fitF   = af.createFitFactory();
      IFitter              fitter = fitF.createFitter("Chi2","uncmin");

      // Create a two dimensional IDataPointSet.
      IDataPointSet dataPointSet = dpsf.create("dataPointSet","two dimensional IDataPointSet",2);

      // Fill the two dimensional IDataPointSet
      double[] yVals2D = { 0.12, 0.22, 0.35, 0.42, 0.54 , 0.61 };
      double[] yErrP2D = { 0.01, 0.02, 0.03, 0.03, 0.04 , 0.04 };
      double[] yErrM2D = { 0.02, 0.02, 0.02, 0.04, 0.06 , 0.05 };
      double[] xVals2D = { 1.5, 2.6, 3.4, 4.6, 5.5 , 6.4 };
      double[] xErrP2D = { 0.5, 0.5, 0.4, 0.4, 0.5 , 0.5 };

      for ( int i = 0; i