desc.equilibrium.Equilibrium.get_rtz_grid

Equilibrium.get_rtz_grid(radial, poloidal, toroidal, coordinates, period=(inf, inf, inf), jitable=True, **kwargs)Source

Return DESC grid in (rho, theta, zeta) coordinates from given coordinates.

Create a tensor-product grid from the given coordinates, and return the same grid in DESC coordinates.

Parameters:

  • radial (ndarray) – Sorted unique radial coordinates.

  • poloidal (ndarray) – Sorted unique poloidal coordinates.

  • toroidal (ndarray) – Sorted unique toroidal coordinates.

  • coordinates (str) – Input coordinates that are specified by the arguments, respectively. raz : rho, alpha, zeta rvp : rho, theta_PEST, phi rtz : rho, theta, zeta

  • period (tuple of float) – Assumed periodicity of the given coordinates. Use np.inf to denote no periodicity.

  • jitable (bool, optional) – If false the returned grid has additional attributes. Required to be false to retain nodes at magnetic axis.

Returns:

desc_grid (Grid) – DESC coordinate grid for the given coordinates.