polyscale scales the roots of a polynomial in the z plane b = polyscale(a,alpha) b = polyscale(a,alpha) scales the roots of a polynomial in the z-plane, where a is a vector containing the polynomial coefficients and alpha is the scaling factor. If alpha is a real value in the range [0 1], then the roots of a are radially scaled toward the origin in the z-plane. Complex values for alpha allow arbitrary changes to the root locations. a: vector containing the polynomial coefficients alpha: the scaling vector b: vector of scaled roots. Debdeep Dey