文章目錄

• 注釋
• 文字
• Tex公式
• 區(qū)域填充
• 極坐標(biāo)

注釋

import matplotlib.pyplot as plt import numpy as np x=np.arange(-10,11,1) y=x*x plt.plot(x,y)plt.annotate('this is the bottom',xy=(0,1),xytext=(0,20),arrowprops=dict(facecolor='r',frac=0.2)) plt.show()

文字

import matplotlib.pyplot as plt import numpy as np x=np.arange(-10,11,1) y=x*x plt.plot(x,y)plt.text(0,40,'functio:y=x*x',family='serif',size=20,color='r',style='italic') plt.show() import matplotlib.pyplot as plt import numpy as np x=np.arange(-10,11,1) y=x*x plt.plot(x,y)plt.text(0,40,'functio:y=x*x',family='serif',size=20,color='r',style='italic',bbox=dict(facecolor='r',alpha=0.2)) plt.show()

Tex公式

import matplotlib.pyplot as plt import numpy as np fig=plt.figure() ax=fig.add_subplot(111) ax.set_xlim([1,7]) ax.set_ylim([1,5])ax.text(2,4,r"$\alpha_i\beta_j\pi\lambda\omega$",size=25) ax.text(4,4,r"$\sin(0)=\cos(\frac{\pi}{2})$",size=25) ax.text(2,2,r"$\lim_{x \rightarrow y}\frac{1}{x^3}$",size=25) ax.text(4,2,r"$\sqrt[4]{x}=\sqrt{y}$",size=25) plt.show()

區(qū)域填充

import matplotlib.pyplot as plt import numpy as np x=np.linspace(0.5*np.pi,100) y1=np.sin(x) y2=np.sin(2*x) plt.fill(x,y1,'b',alpha=0.3) plt.fill(x,y2,'r',alpha=0.3) plt.show()

極坐標(biāo)

import matplotlib.pyplot as plt import numpy as np r=np.arange(1,6,1) theta=[0,np.pi/2,np.pi,3*np.pi/2,2*np.pi] ax=plt.subplot(111,projection='polar') ax.plot(theta,r,color='r',linewidth=3) ax.grid(True) plt.show()

import matplotlib.pyplot as plt import numpy as np r=np.empty(5) r.fill(5) theta=[0,np.pi/2,np.pi,3*np.pi/2,2*np.pi] ax=plt.subplot(111,projection='polar') ax.plot(theta,r,color='r',linewidth=3) ax.grid(True) plt.show()

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