R 修改日期,为小于时间戳的所有时间创建列
我有一些数据如下所示:R 修改日期,为小于时间戳的所有时间创建列,r,datetime,dplyr,lubridate,R,Datetime,Dplyr,Lubridate,我有一些数据如下所示: # A tibble: 754 x 2 time v1 <dttm> <dbl> 1 2020-04-16 09:45:00 175. 2 2020-04-16 10:00:00 174. 3 2020-04-16 10:15:00 174. 4 2020-04-16 10:30:00 173. 5 2020-04-16 10:45:00 174. 因此,当
# A tibble: 754 x 2
time v1
<dttm> <dbl>
1 2020-04-16 09:45:00 175.
2 2020-04-16 10:00:00 174.
3 2020-04-16 10:15:00 174.
4 2020-04-16 10:30:00 173.
5 2020-04-16 10:45:00 174.
因此,当数据小于10:30时,所有时间的预期输出将为1
(在所有天内),所有时间之后的预期输出将为0
数据:
df您不必对数据进行分组。只需使用格式
即可重新设置时间格式:
df %>%
mutate(lessThanTenThirty = if_else(format(time, '%H:%M') < "10:30", 1, 0))
# A tibble: 754 x 3
time v1 lessThanTenThirty
<dttm> <dbl> <dbl>
1 2020-04-16 09:45:00 175. 1
2 2020-04-16 10:00:00 174. 1
3 2020-04-16 10:15:00 174. 1
4 2020-04-16 10:30:00 173. 0
5 2020-04-16 10:45:00 174. 0
6 2020-04-16 11:00:00 175. 0
7 2020-04-16 11:15:00 175. 0
8 2020-04-16 11:30:00 175. 0
9 2020-04-16 11:45:00 176. 0
10 2020-04-16 12:00:00 176. 0
df%>%
变异(lessThanTenThirty=if_else(格式(时间,%H:%M')<“10:30”,1,0))
#A tibble:754x3
时间v1小于初始值
1 2020-04-16 09:45:00 175. 1.
2 2020-04-16 10:00:00 174. 1.
3 2020-04-16 10:15:00 174. 1.
4 2020-04-16 10:30:00 173. 0
5 2020-04-16 10:45:00 174. 0
6 2020-04-16 11:00:00 175. 0
7 2020-04-16 11:15:00 175. 0
8 2020-04-16 11:30:00 175. 0
9 2020-04-16 11:45:00 176. 0
10 2020-04-16 12:00:00 176. 0
带有as.ITime的选项
library(data.table)
library(dplyr)
df %>%
mutate(lessThanTenThirty = +(as.ITime(time) < as.ITime("10:30:00")))
库(data.table)
图书馆(dplyr)
df%>%
突变(lessThanTenThirty=+(as.ITime(时间)
df %>%
mutate(lessThanTenThirty = if_else(format(time, '%H:%M') < "10:30", 1, 0))
# A tibble: 754 x 3
time v1 lessThanTenThirty
<dttm> <dbl> <dbl>
1 2020-04-16 09:45:00 175. 1
2 2020-04-16 10:00:00 174. 1
3 2020-04-16 10:15:00 174. 1
4 2020-04-16 10:30:00 173. 0
5 2020-04-16 10:45:00 174. 0
6 2020-04-16 11:00:00 175. 0
7 2020-04-16 11:15:00 175. 0
8 2020-04-16 11:30:00 175. 0
9 2020-04-16 11:45:00 176. 0
10 2020-04-16 12:00:00 176. 0
library(data.table)
library(dplyr)
df %>%
mutate(lessThanTenThirty = +(as.ITime(time) < as.ITime("10:30:00")))