Set limits for the point meta (colormap).

        Point meta values outside this range will be clipped.

        :param min: value for start of the colormap.
        :param max: value for end of the colormap.

def set_mlimits(self, row, column, min=None, max=None):
        """Set limits for the point meta (colormap).

        Point meta values outside this range will be clipped.

        :param min: value for start of the colormap.
        :param max: value for end of the colormap.

        """
        subplot = self.get_subplot_at(row, column)
        subplot.set_mlimits(min, max)