Method autoscale

lib/matplotlib/colors.py:2364–2366

Set *vmin*, *vmax* to min, max of *A*.

(self, A)

    @abstractmethod
    def autoscale(self, A):
        """Set *vmin*, *vmax* to min, max of *A*."""
        pass

    @abstractmethod
    def autoscale_None(self, A):