ComplexMatrixAsRowCollection(IndexCollection) Method

public ComplexMatrixRowCollection AsRowCollection(
	IndexCollection rowIndexes
)

using System;
using System.Numerics;

namespace Novacta.Analytics.CodeExamples
{
    public class ComplexRowsEnumeratorExample1  
    {
        public void Main()
        {
            // Create a matrix.
            var data = new Complex[8] {
                new(1, -1), new(5, -5),
                new(2, -2), new(6, -6),
                new(3, -3), new(7, -7),
                new(4, -4), new(8, -8)
            };
            var matrix = ComplexMatrix.Dense(4, 2, data, StorageOrder.RowMajor);
            Console.WriteLine("Data matrix:");
            Console.WriteLine(matrix);
            Console.WriteLine();

            // Specify the rows to enumerate.
            var rowIndexes = IndexCollection.FromArray([0, 0, 1, 2, 3, 2]);

            // Get the collection of the specified matrix rows.
            var rows = matrix.AsRowCollection(rowIndexes);

            // Enumerate the specified matrix rows.
            foreach (var row in rows)
            {
                Console.WriteLine("Row {0}: ", row.Index);
                Console.WriteLine(row);
            }
        }
    }
}

// Executing method Main() produces the following output:
// 
// Data matrix:
// (                1,               -1) (                5,               -5) 
// (                2,               -2) (                6,               -6) 
// (                3,               -3) (                7,               -7) 
// (                4,               -4) (                8,               -8) 
// 
// 
// 
// Row 0: 
// (                1,               -1) (                5,               -5) 
// Row 0: 
// (                1,               -1) (                5,               -5) 
// Row 1: 
// (                2,               -2) (                6,               -6) 
// Row 2: 
// (                3,               -3) (                7,               -7) 
// Row 3: 
// (                4,               -4) (                8,               -8) 
// Row 2: 
// (                3,               -3) (                7,               -7)