我有以下代码,可以打印出特定均值和标准差的PDF图形。
http://homepage.divms.uiowa.edu/~mbognar/applets/normal.html
我不确定如何解决这个问题。import numpy as np
import matplotlib
import matplotlib.pyplot as plt
def normal(power, mean, std, val):
a = 1/(np.sqrt(2*np.pi)*std)
diff = np.abs(np.power(val-mean, power))
b = np.exp(-(diff)/(2*std*std))
return a*b
pdf_array = []
array = np.arange(-2,2,0.1)
print array
for i in array:
print i
pdf = normal(2, 0, 0.1, i)
print pdf
pdf_array.append(pdf)
plt.plot(array, pdf_array)
plt.ylabel('some numbers')
plt.axis([-2, 2, 0, 5])
plt.show()
print