@classmethod
def isparentof(cls, other):
    """
    Determines if an axis object is an instance of a base class (or the same
    class) of another axis.

    Parameters
    ==========
    other : :class:`Axis` object to compare against this one.

    Returns
    =======
    bool : boolean
      True if ``other`` is an instance of this object's class
    """
    return isinstance(other, cls)
