//      g02cd Example Program Text
//      C# version, NAG Copyright 2008
using System;
using NagLibrary;
using System.Globalization;
using System.IO;
namespace NagDotNetExamples
{
  public class G02CDE
  {
    static string datafile = "ExampleData/g02cde.d";
    static void Main(String[] args)
    {
      if (args.Length == 1)
      {
        datafile = args[0];
      }
      StartExample();
    }
    public static void StartExample()
    {
      try
      {
        DataReader sr = new DataReader(datafile);
        const int n = 8;
        double xmiss,   ymiss; int i;
        double[] result = new double[21];
        double[] x = new double[n];
        double[] y = new double[n];
        int ifail;
        Console.WriteLine("g02cd Example Program Results");
        //      Skip heading in data file
        sr.Reset();
        sr.Reset();
        for (i = 1; i <= n; i++)
        {
          x[i - 1] = double.Parse(sr.Next(), CultureInfo.InvariantCulture);
          y[i - 1] = double.Parse(sr.Next(), CultureInfo.InvariantCulture);
        }
        Console.WriteLine(" ");
        Console.WriteLine(" {0}", " Case     Independent     Dependent");
        Console.Write(" {0}", "number     variable       variable");
        Console.WriteLine(" ");
        for (i = 1; i <= n; i++)
        {
          Console.Write("   {0}{1,15:f4}{2,15:f4}", i, x[i - 1], y[i - 1]);
          Console.WriteLine(" ");
        }
        Console.WriteLine(" ");
        Console.WriteLine(" ");
        // 
        //      Set up missing values
        // 
        xmiss = 0.00e0;
        ymiss = 99.00e0;
        // 
        G02.g02cd(n, x, y, xmiss, ymiss, result, out ifail);
        // 
        if (ifail < 0)
        {
          Console.WriteLine(" ");
          Console.WriteLine("** g02cd failed with ifail = {0,5}", ifail);
        }
        else
        {
          if (ifail != 0)
          {
            Console.Write("  {0}{1,5}", "Routine fails, ifail =", ifail);
          }
          else
          {
            Console.WriteLine("  {0}{1,8:f4}", "Mean of independent variable               = ", result[0]);
            Console.WriteLine("  {0}{1,8:f4}", "Mean of   dependent variable               = ", result[1]);
            Console.WriteLine("  {0}{1,8:f4}", "Standard deviation of independent variable = ", result[2]);
            Console.WriteLine("  {0}{1,8:f4}", "Standard deviation of   dependent variable = ", result[3]);
            Console.WriteLine("  {0}{1,8:f4}", "Correlation coefficient                    = ", result[4]);
            Console.WriteLine(" ");
            Console.WriteLine("  {0}{1,8:f4}", "Regression coefficient                     = ", result[5]);
            Console.WriteLine("  {0}{1,8:f4}", "Standard error of coefficient              = ", result[7]);
            Console.WriteLine("  {0}{1,8:f4}", "t-value for coefficient                    = ", result[9]);
            Console.WriteLine(" ");
            Console.WriteLine(" {0}", "Analysis of regression table :-");
            Console.WriteLine(" ");
            Console.WriteLine(" {0}", "      Source        Sum of squares  D.F.    Mean square     F-value");
            Console.WriteLine(" ");
            Console.Write(" {0}", "Due to regression");
            for (i = 12; i <= 15; i++)
            {
              Console.Write(" {0,11:f3}", result[i - 1]);
            }
            Console.WriteLine(" ");
            Console.Write(" {0}", "About  regression");
            for (i = 16; i <= 18; i++)
            {
              Console.Write(" {0,11:f3}", result[i - 1]);
            }
            Console.WriteLine(" ");
            Console.Write(" {0}", "Total            ");
            for (i = 19; i <= 20; i++)
            {
              Console.Write(" {0,11:f3}", result[i - 1]);
            }
            Console.WriteLine(" ");
            Console.WriteLine(" ");
            Console.WriteLine("  {0}{1,3:f0}", "Number of cases used = ", result[20]);
          }
        }
        // 
      }
      catch (Exception e)
      {
        Console.WriteLine(e.Message);
        Console.Write( "Exception Raised");
      }
    }
  }
}