我有一个csv文件,如下所示:
df = pd.read_csv('book1.csv', header=1)
Index Date Time DEMAND
0 2005-03-01 06:30:00 1
1 2005-03-01 06:45:00 2
2 2005-03-01 07:00:00 4
3 2005-03-01 07:15:00 0
4 2005-03-01 07:30:00 10
5 2005-03-01 07:45:00 13
我想绘制它,但是当我调用df.plot()时,出现错误:
df.plot()
ValueError: view limit minimum -36601.34583333333 is less than 1 and is an invalid Matplotlib date value. This often happens if you pass a non-datetime value to an axis that has datetime units
我还尝试过通过以下方式创建时间序列:
pd.Series(data=df['DEMAND'], index=df['Date Time'])
但是结果是数据变为空:
Date Time
2005-03-01 06:30:00 NaN
2005-03-01 06:45:00 NaN
2005-03-01 07:00:00 NaN
2005-03-01 07:15:00 NaN
2005-03-01 07:30:00 NaN
2005-03-01 07:45:00 NaN
2005-03-01 08:00:00 NaN
2005-03-01 08:15:00 NaN
2005-03-01 08:30:00 NaN
我正在寻找
1)关于这些方法为何失败的建议,和/或
2)另一种获得我想要的结果的方法。
谢谢!