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

        public void StackTest()
        {
            var x1 = Vector.Ones(1000);
            var y1 = Vector.Zeros(1000);

            double[,] w1 = Matrix.Stack(x1, y1).Transpose();

            Assert.AreEqual(1000, w1.Rows());
            Assert.AreEqual(2, w1.Columns());
            Assert.AreEqual(w1.Length, x1.Length + y1.Length);

            for (int i = 0; i < x1.Length; i++)
            {
                Assert.AreEqual(1, x1[i]);
                Assert.AreEqual(1, w1[i, 0]);
            }

            for (int i = 0; i < y1.Length; i++)
            {
                Assert.AreEqual(0, y1[i]);
                Assert.AreEqual(0, w1[i, 1]);
            }

            var x = w1.GetColumn(0);
            var y = w1.GetColumn(1);

            Assert.IsTrue(x.IsEqual(x1));
            Assert.IsTrue(y.IsEqual(y1));
        }
    }