Maplotlib的简单应用

import numpy as np
import matplotlib.pyplot as plt
from matplotlib.image import imread
img=imread(r"E:\私藏壁纸\海滩.jpg")
plt.imshow(img)
plt.show()

import numpy as np
import matplotlib.pyplot as plt
x=np.arange(0,6,0.1)    #以0.1为单位，生成0-6的数据
y=np.sin(x)

z=np.cos(x)
plt.plot(x,y,label="sin")
plt.plot(x,z,label="cos",line)
plt.title("sin&cos")
plt.xlabel("x")
plt.ylabel("y")
plt.legend(loc="best",facecolor="blue",edgecolor="red")
plt.show()

import numpy as np
import matplotlib.pyplot as plt
from matplotlib.image import imread
img=imread(r"E:\私藏壁纸\海滩.jpg")
plt.imshow(img)
plt.show()