code: def get_component(x: OnGrid, *, dim: int, params=None) -> OnGrid:
      r"""Slices the parameters of the field along the last dimensions,
      at the index specified by `dim`.
  
      Args:
        x: The field to slice
        dim: The index to slice at
  
      Returns:
        A new 1D field corresponding to the `dim`-th component of the input field.
      """
      new_params = jnp.expand_dims(x.params[..., dim], axis=-1)
      return x.replace_params(new_params)
  
imports: from typing import List
  import numpy
  from jax import numpy
  from jaxdf.conv import reflection_conv
  from jaxdf.core import operator
  from jaxdf.discretization import Continuous, FiniteDifferences, FourierSeries, OnGrid
  from jaxdf.operators.differential import get_fd_coefficients
label_desc: Use image node_id 8 for calling a global function with example usage: get_component(x) and returns: x