Accord.Tests.Math.MatrixTest.SubmatrixTest C# (CSharp) Method

        public void SubmatrixTest()
        {
            double[][] data = 
            {
                new double[] { 1, 2, 3 },
                new double[] { 4, 5, 6 },
                new double[] { 7, 8, 9 },
            };

            int[] rowIndexes = { 1, 2 };
            int j0 = 0;
            int j1 = 1;

            double[][] expected = 
            {
                //new double[] { 1, 2, 3 },
                new double[] { 4, 5/*, 6*/ },
                new double[] { 7, 8/*, 9*/ },
            };

            double[][] actual = Matrix.Submatrix(data, rowIndexes, j0, j1);

            Assert.IsTrue(Matrix.IsEqual(expected, actual));



            double[][] expected2 = 
            {
                new double[] { 1, 2/*, 3*/ },
                new double[] { 4, 5/*, 6*/ },
                new double[] { 7, 8/*, 9*/ },
            };

            double[][] actual2 = Matrix.Submatrix(data, null, j0, j1);

            Assert.IsTrue(Matrix.IsEqual(expected2, actual2));
        }