要以每小时的频率对 DateTimeIndex 执行地板运算,请使用方法。对于每小时频率,请使用值为'H'的freq参数。DateTimeIndex.floor()
首先,导入所需的库 -
import pandas as pd
创建一个日期时间索引,周期为 5,频率为分钟,即分钟 -
datetimeindex = pd.date_range('2021-09-29 07:20:32.261811624', periods=5, tz='Australia/Adelaide', freq='20min')
显示 DateTimeInde -
print("DateTimeIndex...\n", datetimeindex)
以每小时频率对 DateTimeIndex 日期进行地板操作,对于每小时频率,我们使用了 'H' -
print("\nPerforming floor operation with hourly frequency...\n", datetimeindex.floor(freq='H'))
以下是代码 -
import pandas as pd # DatetimeIndex with period 5 and frequency as min i.e. minutes # timezone is Australia/Adelaide datetimeindex = pd.date_range('2021-09-29 07:20:32.261811624', periods=5, tz='Australia/Adelaide', freq='20min') # display DateTimeIndex print("DateTimeIndex...\n", datetimeindex) # display DateTimeIndex frequency print("DateTimeIndex frequency...\n", datetimeindex.freq) # Floor operation on DateTimeIndex date with hourly frequency # For hourly frequency, we have used 'H' print("\nPerforming floor operation with hourly frequency...\n", datetimeindex.floor(freq='H'))输出结果
这将产生以下代码 -
DateTimeIndex... DatetimeIndex(['2021-09-29 07:20:32.261811624+09:30', '2021-09-29 07:40:32.261811624+09:30', '2021-09-29 08:00:32.261811624+09:30', '2021-09-29 08:20:32.261811624+09:30', '2021-09-29 08:40:32.261811624+09:30'], dtype='datetime64[ns, Australia/Adelaide]', freq='20T') DateTimeIndex frequency... <20 * Minutes> Performing floor operation with hourly frequency... DatetimeIndex(['2021-09-29 07:00:00+09:30', '2021-09-29 07:00:00+09:30', '2021-09-29 08:00:00+09:30', '2021-09-29 08:00:00+09:30', '2021-09-29 08:00:00+09:30'], dtype='datetime64[ns, Australia/Adelaide]', freq=None)