//      g02by Example Program Text
//      C# version, NAG Copyright 2008
using System;
using NagLibrary;
using System.Globalization;
using System.IO;
namespace NagDotNetExamples
{
  public class G02BYE
  {
    static string datafile = "ExampleData/g02bye.d";
    static void Main(String[] args)
    {
      if (args.Length == 1)
      {
        datafile = args[0];
      }
      StartExample();
    }
    public static void StartExample()
    {
      try
      {
        DataReader sr = new DataReader(datafile);
        int j,   k,   m,   n,   nx,   ny; int ifail;
        Console.WriteLine("g02by Example Program Results");
        //      Skip heading in data file
        sr.Reset();
        sr.Reset();
        n = int.Parse(sr.Next());
        m = int.Parse(sr.Next());
        double[,] p = new double[m, m];
        double[,] r = new double[m, m];
        double[] std = new double[m];
        double[] wt = new double[n];
        double[,] x = new double[n, m];
        double[] xbar = new double[m];
        int[] isz = new int[m];
        if (m >=1 && n >= 1)
        {
          sr.Reset();
          for (j = 1; j <= n; j++)
          {
            for (k = 1; k <= m; k++)
            {
              x[j - 1, k - 1] = double.Parse(sr.Next(), CultureInfo.InvariantCulture);
            }
          }
          // 
          //         Calculate correlation matrix
          // 
          // 
          G02.g02bx("U", n, m, x, wt, xbar, std, r, p, out ifail);
          // 
          if (ifail == 0)
          {
            // 
            //            Print the correlation matrix
            // 
            Console.WriteLine(" ");
            X04.x04ca("Upper", "Non-unit", m, m, p, "Correlation matrix", out ifail);
            sr.Reset();
            ny = int.Parse(sr.Next());
            nx = int.Parse(sr.Next());
            sr.Reset();
            for (j = 1; j <= m; j++)
            {
              isz[j - 1] = int.Parse(sr.Next());
            }
            // 
            //            Calculate partial correlation matrix
            // 
            // 
            G02.g02by(m, ny, nx, isz, r, p, out ifail);
            // 
            if (ifail == 0)
            {
              // 
              //               Print partial correlation matrix
              // 
              Console.WriteLine(" ");
              X04.x04ca("Upper", "Unit", ny, ny, p, "Partial Correlation matrix", out ifail);
            }
            else
            {
              Console.WriteLine(" ");
              Console.WriteLine("** g02by failed with ifail = {0,5}", ifail);
            }
          }
          else
          {
            Console.WriteLine(" ");
            Console.WriteLine("** g02bx failed with ifail = {0,5}", ifail);
          }
        }
        // 
      }
      catch (Exception e)
      {
        Console.WriteLine(e.Message);
        Console.Write( "Exception Raised");
      }
    }
  }
}