使用python繪制雙軸圖

 

import matplotlib.pyplot as plt
import seaborn as sns
sns.set_style("darkgrid")
plt.rcParams["font.sans-serif"]="SimHei"
plt.rcParams["axes.unicode_minus"]=False

fig,ax = plt.subplots(figsize=(8,4),dpi=300)
ax1 = book_order_day_1.plot(x="date",y="order_number",xticks=range(0,95,5),ax=ax,label="訂單量",xlabel="",ylabel="訂單量",rot=180)
ax2  = book_order_day_2.plot(x="date",y="user_n",secondary_y=True,ax=ax,label="購買用戶數",mark_right=False,xlabel="",rot=-90)
plt.ylabel("購買用戶數")

參考博客：https://www.codenong.com/53577630/