数据可视化训练第四天（模拟投掷筛子并且统计频次）

投掷一个筛子

import matplotlib.pyplot as plt
from random import randint
import numpy as np

class Die:
    """模拟投掷筛子"""
    def __init__(self,num_sides=6):
        self.num_sides=num_sides
        
    def roll(self):
        return randint(1,self.num_sides)
    
    
    

num=100000#投掷1000次
num_sides=12
results=[]
die=Die(num_sides)#创建一个6面筛子

for value in range(num):
    results.append(die.roll())
    
frequencies=[]

for i in range(1,num_sides+1):
    frequencies.append(results.count(i))

    
fig,ax =plt.subplots()
x_values=list(range(1,num_sides+1))
p=ax.bar(x_values,frequencies,label='frequency')

ax.set_title("The frequency of chromophores")
ax.set_xlabel('surface')
ax.set_ylabel('quanity')
#设置bar的格式
ax.bar_label(p,label_type='edge')

ax.legend()

plt.show()
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运行
运行

投掷两个筛子

import matplotlib.pyplot as plt
from random import randint
import numpy as np

class Die:
    """模拟投掷筛子"""
    def __init__(self,num_sides=6):
        self.num_sides=num_sides
        
    def roll(self):
        return randint(1,self.num_sides)
    
    
    

num=100000#投掷1000次
num_sides=6
results=[]
die=Die(num_sides)#创建一个6面筛子
die1=Die(num_sides)

for value in range(num):
    results.append(die.roll()+die1.roll())
    
frequencies=[]

for i in range(1,num_sides*2+1):
    frequencies.append(results.count(i))


#绘图
fig,ax =plt.subplots()
x_values=list(range(1,num_sides*2+1))
p=ax.bar(x_values,frequencies,label='frequency')

ax.set_title("The frequency of chromophores")
ax.set_xlabel('surface')
ax.set_ylabel('quanity')
ax.set_xticks(x_values)
#设置bar的格式
ax.bar_label(p,label_type='edge')

ax.legend()

plt.show()
'
运行
运行

重构代码

import matplotlib.pyplot as plt
from random import randint
import numpy as np

class Die:
    """模拟投掷筛子"""
    def __init__(self,num_sides=[6]):
        self.num_sides=num_sides
        self.results=[]
        
    def roll(self):
        """返回投掷筛子的总点数"""
        result=0
        for value in self.num_sides:
            result+=randint(1,value)
        return result
    
    def roll_many(self,num=1000):
        """投掷多次返回每次投掷的结果"""
        for value in range(num):
            self.results.append(self.roll())
        return self.results
    
    def get_sum(self):
    	"""返回点数的最大和"""
        sum_=0
        for value in self.num_sides:
            sum_+=value
        return sum_
    
    def get_frenquencies(self):
    	"""获得每个点数出现的频次"""
        frequencise=[]
        sum_=self.get_sum()
        for i in range(1,sum_+1):
            frequency=self.results.count(i)
            frequencise.append(frequency)
            
        return frequencise
    
    
   
num=100000#投掷1000次
#可以投掷任意数量的筛子
num_sides=[6,6,2]
die=Die(num_sides=num_sides)
results=die.roll_many(num)
frequencise=die.get_frenquencies()
print(frequencise)


#绘图
fig,ax =plt.subplots()
x_values=list(range(1,die.get_sum()+1))
p=ax.bar(x_values,frequencise,label='frequency')

ax.set_title("The frequency of chromophores")
ax.set_xlabel('surface')
ax.set_ylabel('quanity')
ax.set_xticks(x_values)
#设置bar的格式
ax.bar_label(p,label_type='edge')

ax.legend()

plt.show()