code: def _raise_warnings(image_properties):
      """Raise the appropriate warning for each nonstandard image type.
  
      Parameters
      ----------
      image_properties : ImageProperties named tuple
          The properties of the considered image.
      """
      ip = image_properties
      if ip.unsupported_dtype:
          warn(
              "Non-standard image type; displaying image with "
              "stretched contrast.",
              stacklevel=3,
          )
      if ip.low_data_range:
          warn(
              "Low image data range; displaying image with "
              "stretched contrast.",
              stacklevel=3,
          )
      if ip.out_of_range_float:
          warn(
              "Float image out of standard range; displaying "
              "image with stretched contrast.",
              stacklevel=3,
          )
  
file_path: scikit-image/skimage/io/_plugins/matplotlib_plugin.py
imports: from collections import namedtuple
  import numpy
  from ...util import dtype
  from ...exposure import is_low_contrast
  from ..._shared.utils import warn
  from math import floor, ceil
label_desc: Use image node_id 2 for calling a global function with example usage: _raise_warnings(image_properties) without return types