Accord.Tests.Math.HaarTest.IWTTest C# (CSharp) Method

        public void IWTTest()
        {
            double[] original = { 1, 2, 3, 4 };
            double[] data = { 1, 2, 3, 4 };
            double[] expected = { 2.1213, 4.9497, -0.7071, -0.7071 };

            Haar.FWT(data);

            var d = data.Multiply(Constants.Sqrt2);

            Assert.IsTrue(Matrix.IsEqual(expected, d, 0.001));

            Haar.IWT(data);
            Assert.IsTrue(Matrix.IsEqual(original, data, 0.001));
        }