m the input.

format : None or str or Formatter
    If None, `~.ticker.ScalarFormatter` is used.
    Format strings, e.g., ``"%4.2e"`` or ``"{x:.2e}"``, are supported.
    An alternative `~.ticker.Formatter` may be given instead.

drawedges : bool
    Whether to draw lines at color boundaries.

label : str
    The label on the colorbar's long axis.

boundaries, values : None or a sequence
    If unset, the colormap will be displayed on a 0-1 scale.
    If sequences, *values* must have a length 1 less than *boundaries*.  For
    each region delimited by adjacent entries in *boundaries*, the color mapped
    to the corresponding value in values will be used.
    Normally only useful for indexed colors (i.e. ``norm=NoNorm()``) or other
    unusual circumstances.)