class_docstr: A Fourier series field defined on a collocation grid.
class_docstr_tok: ["A","Fourier","series","field","defined","on","a","collocation","grid","."]
code: def _freq_grid(self):
      return jnp.stack(
          jnp.meshgrid(*self._freq_axis, indexing="ij"), axis=-1
      )
  
imports: import warnings
  from typing import Callable, TypeVar
  import equinox
  from equinox import tree_equal
  from jax import eval_shape
  from jax import numpy
  from jax import vmap
  from jaxtyping import PyTree
  from jaxdf.core import Field
  from jaxdf.geometry import Domain
label_desc: Use image node_id 6 for calling the FourierSeries obj's underlying member method code with example usage: obj._freq_grid() and returns: jnp