Python Pandas - 返回特定時間段內 DateTimeIndex 中的值的索引位置


要返回特定時間段內 DateTimeIndex 中的值的索引位置,請使用 DateTimeIndex.indexer_between_time() 方法。

首先,匯入所需庫 −

import pandas as pd

使用 5 的週期和 T(即分鐘)建立 DateTimeIndex。時區為澳洲/阿德萊德 −

datetimeindex = pd.date_range('2021-10-30 02:30:50', periods=5, tz='Australia/Adelaide', freq='20T')

顯示 DateTimeIndex −

print("DateTimeIndex...\n", datetimeindex)

顯示特定時間段內值的索引位置。“開始時間”設為“02:30:50”,“結束時間”為“03:20:50 −

print("\nIndex locations of values between particular time of day...\n",
datetimeindex.indexer_between_time('02:30:50','03:20:50'))

示例

以下是程式碼 −

import pandas as pd

# DatetimeIndex with period 5 and frequency as T i.e. minutes
# The timezone is Australia/Adelaide
datetimeindex = pd.date_range('2021-10-30 02:30:50', periods=5, tz='Australia/Adelaide', freq='20T')

# display DateTimeIndex
print("DateTimeIndex...\n", datetimeindex)

# display DateTimeIndex frequency
print("\nDateTimeIndex frequency...\n", datetimeindex.freq)

# display index locations of values at particular time of day i.e. 03:10:50 here
print("\nIndex locations of values at particular time of day...\n",
datetimeindex.indexer_at_time('2021-10-30 03:10:50'))

# display index locations of values between particular time of day
# The "start_time" is set '02:30:50' and "end_time" '03:20:50'
print("\nIndex locations of values between particular time of day...\n",
datetimeindex.indexer_between_time('02:30:50','03:20:50'))

輸出

這將生成以下程式碼 −

DateTimeIndex...
DatetimeIndex(['2021-10-30 02:30:50+10:30', '2021-10-30 02:50:50+10:30',
'2021-10-30 03:10:50+10:30', '2021-10-30 03:30:50+10:30',
'2021-10-30 03:50:50+10:30'],
dtype='datetime64[ns, Australia/Adelaide]', freq='20T')
DateTimeIndex frequency...
<20 * Minutes>

Index locations of values at particular time of day...
[2]

Index locations of values between particular time of day...
[0 1 2]

更新於: 18-10-2021

223 次瀏覽

開啟您的職業生涯

透過完成本課程取得認證

開始
廣告
© . All rights reserved.