我是编程新手,想知道我是否可以从这里非常有帮助的社区获得一些专家帮助。
我正在尝试创建鼠标单击事件,鼠标单击右侧的绘图的整个区域都会被遮挡。因此,我希望鼠标单击以注册x值,在该x值上创建一条垂直线,并将整个绘图着色到垂直线的右侧。
我有5个子图显示分布。我希望这个鼠标点击事件仅在第4个(PDF图)和第5个(CDF图)子图上触发。这样做的目的是设置边距并分析分布。
见下图
我设法编写了一个代码来执行此操作,但是在点击鼠标时它没有更新(阴影区域)绘图。这是我的代码
import numpy as np
from scipy.stats import norm, lognorm, uniform
import matplotlib.pyplot as plt
from matplotlib.widgets import Slider, Button, RadioButtons, CheckButtons
from matplotlib.patches import Polygon
#####Mean and standard deviation#####
mu_a1 = 1
mu_b1 = 10
mu_c1 = -13
sigma_a1 = 0.14
sigma_b1 = 1.16
sigma_c1 = 2.87
mu_x01 = -11
sigma_x01 = 1.9
#####_____#####
#####Generating random data#####
a1 = 0.75*mu_a1 + (1.25 - 0.75)*sigma_a1*np.random.sample(10000)
b1 = 8*mu_b1 + (12 - 8)*sigma_b1*np.random.sample(10000)
c1 = -12*mu_c1 + 2*sigma_c1*np.random.sample(10000)
x01 = (-b1 - np.sqrt(b1**2 - (4*a1*c1)))/(2*a1)
#####_____#####
#####Creating Subplots#####
fig = plt.figure()
plt.subplots_adjust(left=0.13,right=0.99,bottom=0.05)
ax1 = fig.add_subplot(331) #Subplot 1
ax1.set_xlabel('a' , fontsize = 14)
ax1.grid(True)
ax2 = fig.add_subplot(334) #Subplot 2
ax2.set_xlabel('b', fontsize = 14)
ax2.grid(True)
ax3 = fig.add_subplot(337) #Subplot 3
ax3.set_xlabel('c', fontsize = 14)
ax3.grid(True)
ax4 = fig.add_subplot(132) #Subplot 4
ax4.set_xlabel('x0', fontsize = 14)
ax4.set_ylabel('PDF', fontsize = 14)
ax4.grid(True)
ax5 = fig.add_subplot(133) #Subplot 5
ax5.set_xlabel('x0', fontsize = 14)
ax5.set_ylabel('CDF', fontsize = 14)
ax5.grid(True)
#####_____#####
#####Plotting Distributions#####
[n1,bins1,patches] = ax1.hist(a1, bins=50, color = 'red',alpha = 0.5, normed = True)
[n2,bins2,patches] = ax2.hist(b1, bins=50, color = 'red',alpha = 0.5, normed = True)
[n3,bins3,patches] = ax3.hist(c1, bins=50, color = 'red',alpha = 0.5, normed = True)
[n4,bins4,patches] = ax4.hist(x01, bins=50, color = 'red',alpha = 0.5, normed = True)
ax4.axvline(np.mean(x01), color = 'black', linestyle = 'dashed', lw = 2)
dx = bins4[1] - bins4[0]
CDF = np.cumsum(n4)*dx
ax5.plot(bins4[1:], CDF, color = 'red')
#####_____#####
#####Event handler for button_press_event#####
def onclick(event):
'''
Event handler for button_press_event
@param event MouseEvent
'''
global ix
ix = event.xdata
if ix is not None:
print 'x = %f' %(ix)
ax4.clear()
ax5.clear()
ax4.grid(True)
ax5.grid(True)
[n4,bins4,patches] = ax4.hist(x01, bins=50, color = 'red',alpha = 0.5, normed = True)
ax4.axvline(np.mean(x01), color = 'black', linestyle = 'dashed', lw = 2)
ax4.axvspan(ix, -90, facecolor='0.9', alpha=0.5)
dx = bins4[1] - bins4[0]
CDF = np.cumsum(n4)*dx
ax5.plot(bins4[1:], CDF, color = 'red')
ax5.axvspan(ix, -75, facecolor='0.9', alpha=0.5)
return ix
cid = fig.canvas.mpl_connect('button_press_event', onclick)
plt.show()
#####_____#####
此外,由于我使用axvspan
,它要求我输入xmin和xmax值。 xmin = mouse_click_value和xmax,我希望它直到图的结尾,结果值可能是什么。目前,我使用固定值(图片中的-90或-75)。当变量的值发生变化时,这似乎不起作用。
答案 0 :(得分:1)
只需添加:
plt.draw()
在您完成所有更新后(即return
onClick
之前)。
您可以使用(例如在ax5
上):
ax5.get_xlim()[1]
获取xmax
ax5