Python: Matplotlib 中如何將圖例放置在繪圖之外? plt.legend(bbox_to_anchor=(1.05, 1.0), loc=’upper left’) ; plt.tight_layout() ; 如何防止儲存的檔案圖例被裁切? plt.savefig(‘example.png’, dpi=300, format=’png’, bbox_extra_artists=(lg,), bbox_inches=’tight’)

本文參考delftstack: 

import matplotlib.pyplot as plt
import numpy as np

x = np.linspace(0, 10, 100)

plt.plot(x, np.sin(x), label="sin(x)")
plt.plot(x, np.cos(x), label="cos(x)")

plt.legend(bbox_to_anchor=(1.05, 1.0), loc='upper left')
# plt.tight_layout()
plt.show()

plt.tight_layout()

沒加這一行

Spyder沒出現裁切圖例的狀況

但是 plt.savefig(“bbox_to_anchor.png”)

儲存的檔案出現被裁切的狀況:

import matplotlib.pyplot as plt
import numpy as np

x = np.linspace(0, 10, 100)

plt.plot(x, np.sin(x), label="sin(x)")
plt.plot(x, np.cos(x), label="cos(x)")

lg = plt.legend(bbox_to_anchor=(1.05, 1.0), loc='upper left')

plt.savefig('example.png',
dpi=300,
format='png',
bbox_extra_artists=(lg,),
bbox_inches='tight')

推薦hahow線上學習python: https://igrape.net/30afN