code: def latLongGridPredicate(
      field: Tuple[float], digits: int = 1
  ) -> FrozenSet[str]:
      """
      Given a lat / long pair, return the grid coordinates at the
      nearest base value.  e.g., (42.3, -5.4) returns a grid at 0.1
      degree resolution of 0.1 degrees of latitude ~ 7km, so this is
      effectively a 14km lat grid.  This is imprecise for longitude,
      since 1 degree of longitude is 0km at the poles, and up to 111km
      at the equator. But it should be reasonably precise given some
      prior logical block (e.g., country).
      """
      if any(field):
          return frozenset(
              (str(tuple(round(dim, digits) for dim in field)),)
          )
      else:
          return frozenset()
  
imports: import re
  from itertools import chain
  from math import copysign, floor, log10
  from typing import Any, FrozenSet, Sequence, Tuple, Union
  from doublemetaphone import doublemetaphone
  from dedupe.cpredicates import initials, ngrams, unique_ngrams
label_desc: Use image node_id 33 for calling a global function with example usage: latLongGridPredicate(field, digits) and returns: frozenset, frozenset