我有一个数据框,看起来像:
DF_1>
T_id D1 D2 Num type type_2 fig
xt-1 2017-05-01 2017-03-25 12:11:45 10 A X 25.20
xt-2 2017-05-01 2017-03-25 21:05:25 20 A Y 20.15
xt-3 2017-05-01 2017-03-25 08:10:55 25 B X 15.11
xt-4 2017-05-03 2017-03-25 07:19:35 30 B Y 22.56
xt-5 2017-05-03 2017-03-25 13:12:56 45 C Z 35.45
xt-6 2017-05-03 2017-03-25 18:14:44 20 D Z 27.21
xt-7 2017-04-06 2017-03-25 19:21:35 15 A Z 23.20
xt-8 2017-04-06 2017-03-25 21:11:15 40 C X 21.40
xt-9 2017-04-08 2017-02-25 22:25:04 20 A A …我在下面提到了八个数据帧:
DF_1
Date ID
2017-01-01 12:04:01 AB-1
2017-01-12 22:15:21 AB-2
2017-01-15 18:12:20 AB-3
2017-02-02 17:05:45 AB-4
2017-02-08 19:55:45 AB-5
2017-02-15 13:04:09 AB-6
2017-03-05 20:22:22 AB-7
2017-03-10 14:15:16 AB-8
2017-03-25 19:40:11 AB-9
2017-03-28 21:45:24 AB-10
DF_2
2017-01-01 12:04:01 AB-1
2017-01-12 22:15:21 AB-2
2017-01-15 18:12:20 AB-3
2017-02-02 17:05:45 AB-4
2017-02-08 19:55:45 AB-5
2017-02-15 13:04:09 AB-6
2017-03-05 20:22:22 AB-7
2017-03-10 14:15:16 AB-8
2017-03-25 19:40:11 AB-9
DF_3
2017-01-01 12:04:01 AB-1
2017-01-12 22:15:21 AB-2
2017-01-15 18:12:20 AB-3
2017-02-02 17:05:45 AB-4
2017-02-08 19:55:45 AB-5
2017-02-15 13:04:09 …