axes_class = Axes
    try:
        # Avoid creating two different instances of GeoAxesSubplot...
        # Only a temporary backcompat fix.  This should be removed in
        # 3.4
        return next(cls for cls in SubplotBase.__subclasses__()
                    if cls.__bases__ == (SubplotBase, axes_class))
    except StopIteration:
        return type("%sSubplot" % axes_class.__name__,
                    (SubplotBase, axes_class),
                    {'_axes_class': axes_class})


# This is provided for backward compatibility
Subplot = subplot_class_factory()


def _picklable_subplot_class_constructor(axes_class):
    """
    This stub class exists to return the appropriate subplot class when called
    with an axes class. This is purely to allow pickling of Axes and Subplots.
    """
    subplot_class = subplot_class_factory(axes_class)
    return subplot_class.__new__(subplot_class)


docstring.interpd.update(Axes=martist.kwdoc(Axes))
docstring.dedent_interpd(Axes.__init__)

docstring.interpd.update(Subplot=martist.kwdoc(Axes))

    figsize_min = np.array((4.0,2.0)) # min length for width/height
    figsize_max = np.array((16.0,16.0)) # max length for width/height
    #figsize_min = rcParams['figure.figsize_min']
    #figsize_max = rcParams['figure.figsize_max']

    # Extract the aspect ratio of the array
    if isarray:
        nr,nc = arg.shape[:2]
        arr_ratio = float(nr)/nc
    else:
        arr_ratio = float(arg)

    # Height of user figure defaults
    fig_height = rcParams['figure.figsize'][1]

    # New size for the figure, keeping the aspect ratio of the caller
    newsize = np.array((fig_height/arr_ratio,fig_height))

    # Sanity checks, don't drop either dimension below figsize_min
    newsize /= min(1.0,*(newsize/figsize_min))

    # Avoid humongous windows as well
    newsize /= max(1.0,*(newsize/figsize_max))

    # Finally, if we have a really funky aspect ratio, break it but respect
    # the min/max dimensions (we don't want figures 10 feet tall!)
    newsize = np.clip(newsize,figsize_min,figsize_max)
    return newsize

docstring.interpd.update(Figure=martist.kwdoc(Figure))