Python random.vonmisesvariate()

The random module is used to generate random numbers in Python. These numbers are not actually random, but rather pseudo-random. This means that these randomly generated numbers can be determined.

random.vonmisesvariate()

vonmisesvariate() is a built-in method of the random module. It returns a random floating-point number with a von Mises or cyclic normal distribution.

Syntax: random.vonmisesvariate(mu, kappa)

Parameters:

mu: Mean angle, expressed in radians, between 0 and 2

pikappa: Concentration parameter, greater than or equal to zero

Returns: A random von Mises distributed floating-point number

Example 1:

# import the random module
import random
  
# determining the values of the parameters
mu = 0
kappa = 4
  
# using the vonmisesvariate() method
print(random.vonmisesvariate(mu, kappa))

Output:

0.9429600175580171

Example 2: We can generate numbers multiple times and plot a graph to observe the von Mises distribution.

# import the required libraries
import random
import matplotlib.pyplot as plt
    
# store the random numbers in a
# list
nums = []
mu = 0
kappa = 4
    
for i in range(100):
Temp = random.vonmisesvariate(mu, kappa)
nums.append(temp)
        
# plotting a graph 
plt.plot(nums) 
plt.show()

Output:

Example 3: We can create a histogram to visualize the density of the von Mises distribution.

# import the required libraries
import random
import matplotlib.pyplot as plt
    
# store the random numbers in a list
nums = []
mu = 0
kappa = 4
    
for i in range(10000):
Temp = random.vonmisesvariate(mu, kappa)
nums.append(temp)
        
# plotting a graph
plt.hist(nums, bins = 200)
plt.show()

Output: