# scipy.interpolate.PPoly.extend

PPoly.extend(c, x, right=None)

  Add additional breakpoints and coefficients to the polynomial.

  Parameters
    c ndarray, size (k, m, …)

      Additional coefficients for polynomials in intervals. Note that the first additional interval will be formed using one of the `self.x` end points.

    x ndarray, size (m,)

      Additional breakpoints. Must be sorted in the same order as `self.x` and either to the right or to the left of the current breakpoints.

    right

      Deprecated argument. Has no effect.

      Deprecated since version 0.19.

scipy.interpolate.PPoly.roots scipy.interpolate.PPoly.from_spline