看看这个问题和演示：
from matplotlib.pyplot import figure, showimport numpy as npyfrom numpy.random import randif 1: # picking on a scatter plot (matplotlib.collections.RegularPolyCollection) x, y, c, s = rand(4, 100) def onpick3(event): ind = event.ind print 'onpick3 scatter:', ind, npy.take(x, ind), npy.take(y, ind) fig = figure() ax1 = fig.add_subplot(111) col = ax1.scatter(x, y, 100*s, c, picker=True) #fig.savefig('pscoll.eps') fig.canvas.mpl_connect('pick_event', onpick3)show()
