     figsize : tuple, optional         A tuple (width, height) of the figure in inches.         Mutually exclusive with ``size`` and ``ax``.     aspect : scalar, optional         Aspect ratio of plot, so that ``aspect * size`` gives the width in         inches. Only used if a ``size`` is provided.     size : scalar, optional         If provided, create a new figure for the plot with the given size.         Height (in inches) of each plot. See also: ``aspect``.     ax : matplotlib