Function mean

lib/matplotlib/tests/test_widgets.py:913–917

(vmin, vmax)

    fig.canvas.blit(fig.bbox)

    def mean(vmin, vmax):
        # Return mean of values in x between *vmin* and *vmax*
        indmin, indmax = np.searchsorted(x, (vmin, vmax))
        v = values[indmin:indmax].mean()
        ln2.set_data(x, np.full_like(x, v))

    span = widgets.SpanSelector(ax, mean, direction='horizontal',
                                onmove_callback=mean,