desc.vmec.VMECIO.vmec_interpolate

static VMECIO.vmec_interpolate(Cmn, Smn, xm, xn, theta, phi, s=None, si=None, sym=True)Source

Interpolate VMEC data on a flux surface.

Parameters:

  • Cmn (ndarray) – cos(mt-np) Fourier coefficients

  • Smn (ndarray) – sin(mt-np) Fourier coefficients

  • xm (ndarray) – poloidal mode numbers

  • xn (ndarray) – toroidal mode numbers

  • theta (ndarray) – poloidal angles

  • phi (ndarray) – toroidal angles

  • s (ndarray) – radial coordinate, equivalent to normalized toroidal magnetic flux. Defaults to si (all flux surfaces)

  • si (ndarray) – values of radial coordinates where Cmn,Smn are defined. Defaults to linearly spaced on [0,1]

  • sym (bool) – stellarator symmetry (Default value = True)

Returns:

  • if sym = True – C, S (tuple of ndarray): VMEC data interpolated at the points (s,theta,phi) where C has cosine symmetry and S has sine symmetry

  • if sym = False – X (ndarray): non-symmetric VMEC data interpolated at (s,theta,phi)