数据分析~借助pandas绘制横轴为时间的线图

import pandas as pd

import numpy as np
import seaborn as sns
import matplotlib.pyplot as plt
%matplotlib inline

# 借助pandas绘制横轴为时间的线图
import pandas as pd
plt.figure()
observation_dates = np.arange('2017-10-11', '2017-10-19', dtype='datetime64[D]')
observation_dates = list(map(pd.to_datetime, observation_dates))
plt.plot(observation_dates, linear_data, '-o',
        observation_dates, quadratic_data, '-o')

# plt.xticks(rotation='45') 或者如下去旋转X轴数字表示
x = plt.gca().xaxis
for item in x.get_ticklabels():
    item.set_rotation(45)