docstr: Return True at least one of x or y is defined.
docstr_tok: ["Return","True","at","least","one","of","x","or","y","is","defined","."]
code: def has_xy_data(self):
      """Return True at least one of x or y is defined."""
      # TODO see above points about where this should go
      return bool({"x", "y"} & set(self.variables))
  
imports: from numbers import Number
  from functools import partial
  import math
  import textwrap
  import warnings
  import numpy
  import pandas
  import matplotlib
  import matplotlib.pyplot
  import matplotlib.transforms
  from matplotlib.cbook import normalize_kwargs
  from matplotlib.colors import to_rgba
  from matplotlib.collections import LineCollection
  from ._base import VectorPlotter
  from ._statistics import ECDF, Histogram, KDE
  from ._stats.counting import Hist
  from .axisgrid import FacetGrid, _facet_docs
  from .utils import remove_na, _get_transform_functions, _kde_support, _check_argument, _assign_default_kwargs, _default_color
  from .palettes import color_palette
  from .external import husl
  from .external.kde import gaussian_kde
  from ._docstrings import DocstringComponents, _core_docs
label_desc: Use image node_id 4 for calling the _DistributionPlotter obj's underlying member method code with example usage: obj.has_xy_data() and returns: bool