desc.integrals.Bounce1D.interp_to_argmin

Bounce1D.interp_to_argmin(f, points, *, method='cubic')Source

Interpolate f to the deepest point pⱼ in magnetic well j.

Parameters:

• f (jnp.ndarray) – Shape (num ρ, num α, num ζ). Real scalar-valued functions evaluated on the grid supplied to construct this object. Use the method Bounce1D.reshape to reshape the data into the expected shape.

• points (tuple[jnp.ndarray]) – Shape (num ρ, num α, num pitch, num well). Optional, output of method self.points. Tuple of length two (z1, z2) that stores ζ coordinates of bounce points. The points are ordered and grouped such that the straight line path between z1 and z2 resides in the epigraph of B.

• method (str) – Method of interpolation. See https://interpax.readthedocs.io/en/latest/_api/interpax.interp1d.html. Default is cubic C1 local spline.

Returns:

f_j (jnp.ndarray) – Shape (num ρ, num α, num pitch, num well). f interpolated to the deepest point between points.