private static void zipf_sample_test()
//****************************************************************************80
//
// Purpose:
//
// ZIPF_SAMPLE_TEST tests ZIPF_MEAN, ZIPF_SAMPLE, ZIPF_VARIANCE.
//
// Licensing:
//
// This code is distributed under the GNU LGPL license.
//
// Modified:
//
// 09 March 2016
//
// Author:
//
// John Burkardt
//
{
const int SAMPLE_NUM = 1000;
int j;
int seed = 123456789;
int[] x = new int[SAMPLE_NUM];
Console.WriteLine("");
Console.WriteLine("ZIPF_SAMPLE_TEST");
Console.WriteLine(" ZIPF_MEAN computes the Zipf mean;");
Console.WriteLine(" ZIPF_SAMPLE samples the Zipf distribution;");
Console.WriteLine(" ZIPF_VARIANCE computes the Zipf variance.");
double a = 4.0E+00;
Console.WriteLine("");
Console.WriteLine(" PDF parameter A = " + a + "");
if (!Zipf.zipf_check(a))
{
Console.WriteLine("");
Console.WriteLine("ZIPF_SAMPLE_TEST - Fatal error!");
Console.WriteLine(" The parameters are not legal.");
return;
}
double mean = Zipf.zipf_mean(a);
double variance = Zipf.zipf_variance(a);
Console.WriteLine(" PDF mean = " + mean + "");
Console.WriteLine(" PDF variance = " + variance + "");
for (j = 0; j < SAMPLE_NUM; j++)
{
x[j] = Zipf.zipf_sample(a, ref seed);
}
mean = typeMethods.i4vec_mean(SAMPLE_NUM, x);
variance = typeMethods.i4vec_variance(SAMPLE_NUM, x);
int xmax = typeMethods.i4vec_max(SAMPLE_NUM, x);
int xmin = typeMethods.i4vec_min(SAMPLE_NUM, x);
Console.WriteLine("");
Console.WriteLine(" Sample size = " + SAMPLE_NUM + "");
Console.WriteLine(" Sample mean = " + mean + "");
Console.WriteLine(" Sample variance = " + variance + "");
Console.WriteLine(" Sample maximum = " + xmax + "");
Console.WriteLine(" Sample minimum = " + xmin + "");
}