static columnVector(newData) {
                var vector = new this(newData.length, 1);
                for (var i = 0; i < newData.length; i++) {
                    vector.set(i, 0, newData[i]);
                }
                return vector;
            }
Creates a column vector, a matrix with only one column.
@param {Array} newData - A 1D array containing data for the vector
@return {Matrix} - The new matrix