Encog.MathUtil.Matrices.Matrix.IsVector C# (CSharp) Method

        public bool IsVector()
        {
            if (Rows == 1)
            {
                return true;
            }
            else
            {
                return Cols == 1;
            }
        }

        /// <summary>
        /// Compute the dot product for two matrixes.  Note: both matrixes must be vectors.
        /// </summary>
        /// <param name="a">The first matrix, must be a vector.</param>
        /// <param name="b">The second matrix, must be a vector.</param>
        /// <returns>The dot product of the two matrixes.</returns>
        public static double DotProduct(Matrix a, Matrix b)
        {
            if (!a.IsVector() || !b.IsVector())
            {
                throw new MatrixError(
                          "To take the dot product, both matrixes must be vectors.");
            }

            Double[] aArray = a.ToPackedArray();
            Double[] bArray = b.ToPackedArray();

            if (aArray.Length != bArray.Length)
            {
                throw new MatrixError(
                          "To take the dot product, both matrixes must be of the same length.");
            }

            double result = 0;
            int    length = aArray.Length;

            for (int i = 0; i < length; i++)
            {
                result += aArray[i] * bArray[i];
            }

            return(result);
        }