matplotlib.pyplot.ylabel()函数

matplotlib.pyplot.ylabel()

这个函数为图形的y轴设置标签。

语法:matplotlib.pyplot.ylabel(ylabel, fontdict=None，labelpad=None)

参数:

ylabel:标签的名称

fontdict:为标签添加字体样式

labelpad:这有助于我们设置标签和轴之间的间距

示例1

import matplotlib.pyplot as plt
  
# setting x values
x =['Geeks', 'for', 'geeks', 'tutorials']
  
# Setting y values 
y =[1, 2, 3, 4]
  
# Adding label on the y-axis
plt.ylabel('Numbers label')
  
# plotting the graph
plt.plot(x, y)

输出:

示例2

import matplotlib.pyplot as plt
  
x =['Geeks', 'for', 'geeks', 'tutorials']
y =[1, 2, 3, 4]
  
# Adding space between label and
# axis by setting labelpad
plt.ylabel('Numbers label', labelpad = 50)
  
plt.plot(x, y)

输出:

示例# 3:

import matplotlib.pyplot as plt
  
x =['Geeks', 'for', 'geeks', 'tutorials']
y =[1, 2, 3, 4]
  
# Setting font dictionary 
font = {'family': 'Verdana',
        'color':  'green',
        'size': 20,
        }
  
# Adding the font styles to the label
plt.ylabel('Numbers label', fontdict = font)
  
plt.plot(x, y)

Output: