The same data used in SortEx2 is used in this example. It is a 10 x 3 matrix using Columns 0 and 1 as keys. There are two missing values (NaNs) in the keys. NaN is displayed as a ?. Table MultiWay determines the number of groups of different observations.
using System; using Imsl.Stat; using Imsl.Math; public class TableMultiWayEx1 { public static void Main(String[] args) { int nKeys = 2; double[,] x = { {1.0, 1.0, 1.0}, {2.0, 1.0, 2.0}, {1.0, 1.0, 3.0}, {1.0, 1.0, 4.0}, {2.0, 2.0, 5.0}, {1.0, 2.0, 6.0}, {1.0, 2.0, 7.0}, {1.0, 1.0, 8.0}, {2.0, 2.0, 9.0}, {1.0, 1.0, 9.0}}; x[4,1] = Double.NaN; x[6,0] = Double.NaN; PrintMatrix pm = new PrintMatrix("The Input Array"); PrintMatrixFormat mf = new PrintMatrixFormat(); mf.SetNoRowLabels(); mf.SetNoColumnLabels(); // Print the array pm.Print(mf, x); Console.Out.WriteLine(); TableMultiWay tbl = new TableMultiWay(x, nKeys); int[] ngroups = tbl.GetGroups(); Console.Out.WriteLine(" ngroups"); for (int i = 0; i < ngroups.Length; i++) Console.Out.Write(ngroups[i] + " "); } }
The Input Array 1 1 1 2 1 2 1 1 3 1 1 4 2 NaN 5 1 2 6 NaN 2 7 1 1 8 2 2 9 1 1 9 ngroups 5 1 1 1Link to C# source.