在matplotlib

Question

我试图在使用后关闭spanselector。当我转到matplotlib文档时，它会说：

Set the visible attribute to False if you want to turn off the functionality of the span selector

但我不知道如何关闭span选择器的功能，如文档状态。

这是我的代码。

def disconnect_span(self):
  if self.selection_mode == None:   #This is a variable that i use to call this method
    self.SpanSelector(self.axes, self.onselect, "horizontal", useblit = True,
      rectprops = dict(alpha= 0.5, facecolor = "blue"))
    self.figure_canvas.draw_idle()

 else:
   #Here is where i want to put the disconnect condition  

Answer 1

要切换SpanSelector的展示率，您需要使用set_visible()方法。

import matplotlib.pyplot as plt
from matplotlib.widgets import SpanSelector

ax = plt.subplot(111)
ax.plot([1,2], [3,4])

def onselect(vmin, vmax):
    print vmin, vmax

span = SpanSelector(ax, onselect, 'horizontal')

span.set_visible(False)

我在创建对象后立即创建了它，但只要您拥有set_visible()对象，就可以从任何地方调用SpanSelector来禁用选择器。