matplotlib在鼠標事件時檢測對象

Question

有什麼辦法可以檢測到鼠標關注的matplotlib對象嗎？ 這樣的一段代碼，說明了什麼，我想

self.canvas.mpl_connect("motion_notify_event", self.on_focus) 

def on_focus(self, event): 
    # get mouse position in figure 
    figPos = (event.x,event.y) 
    # get mouse position in axes if focusing on an axes 
    axesPos = event.xdata, event.ydata 
    # get axes instance if mouse is focusing on an axes 
    axes = event.inaxes 
    # get object (any matplotlib object, Text, Box, ...) mouse is focused on 
    obj = event.?????? 

感謝

Answer 1

嘗試用Axes.hitlist：

import matplotlib.pyplot as plt 

fig = plt.figure() 
ax = fig.add_subplot(111) 
ax.plot(range(10),range(10)) 

def on_focus(event): 
    print ax.hitlist(event) 
fig.canvas.mpl_connect("motion_notify_event", on_focus) 
plt.show() 

但是，如果你只是想突出你可以使用內置的：

fig.canvas.mpl_connect("motion_notify_event",fig.canvas.onHilite)