class_docstr: Histogram is a Chart element representing a number of bins in a 1D
  coordinate system. The key dimension represents the binned values,
  which may be declared as bin edges or bin centers, while the value
  dimensions usually defines a count, frequency or density associated
  with each bin.
code: def __init__(self, data, **params):
      if data is None:
          data = []
      if (
          isinstance(data, tuple)
          and len(data) == 2
          and len(data[0]) + 1 == len(data[1])
      ):
          data = data[::-1]
  
      super().__init__(data, **params)
  
imports: import numpy
  import param
  from ..core import Dataset, Dimension, Element2D, NdOverlay, Overlay, util
  from ..core.dimension import process_dimensions
  from .geom import Points, Rectangles, VectorField
  from .selection import Selection1DExpr
label_desc: Use image node_id 1 to create a new Histogram object from inherited base classes: Selection1DExpr, Chart with example: obj = Histogram(data)