05:00:00 - 28:59:59时间格式

时间:2014-06-19 11:38:09

标签: r date posixct

我有数据集,其中time.start从5:00:00到28:59:59不等(即01.01.2013 28:00:00实际上是02.01.2013 04:00:00)。日期为%d.%m.%Y格式。

      Date Time.start   
01.01.2013   22:13:07
01.01.2013   22:52:23
01.01.2013   23:34:06
01.01.2013   23:44:25
01.01.2013   27:18:48
01.01.2013   28:41:04

我想将其转换为普通日期格式。

dates$date <- paste(dates$Date,dates$Time.start, sep = " ")
dates$date <- as.POSIXct(strptime(dates$date, "%m.%d.%Y %H:%M:%S"))

但显然我有NA时间&gt; 23时59分59秒

我应该如何修改我的代码?

3 个答案:

答案 0 :(得分:8)

E.g。将时间添加为日期的秒数:

df <- read.table(header=T, text="      Date Time.start   
01.01.2013   22:13:07
01.01.2013   22:52:23
01.01.2013   23:34:06
01.01.2013   23:44:25
01.01.2013   27:18:48
01.01.2013   28:41:04", stringsAsFactors=FALSE)

as.POSIXct(df$Date, format="%d.%m.%Y") +
  sapply(strsplit(df$Time.start, ":"), function(t) {
    t <- as.integer(t)
    t[3] + t[2] * 60 + t[1] * 60 * 60
  })

# [1] "2013-01-01 22:13:07 CET" "2013-01-01 22:52:23 CET" "2013-01-01 23:34:06 CET"
# [4] "2013-01-01 23:44:25 CET" "2013-01-02 03:18:48 CET" "2013-01-02 04:41:04 CET"

答案 1 :(得分:8)

只需修改lukeAs解决方案:

with(df, as.POSIXct(Date, format="%d.%m.%Y")+
 colSums(t(read.table(text=Time.start, sep=":",header=F))*c(3600,60,1)))
[1] "2013-01-01 22:13:07 EST" "2013-01-01 22:52:23 EST" 
[3] "2013-01-01 23:34:06 EST" "2013-01-01 23:44:25 EST"
[5] "2013-01-02 03:18:48 EST" "2013-01-02 04:41:04 EST"

答案 2 :(得分:2)

使用lubridate

with(dates, mdy(Date) + hms(Time.start))

生成:

[1] "2013-01-01 22:13:07 UTC" "2013-01-01 22:52:23 UTC"
[3] "2013-01-01 23:34:06 UTC" "2013-01-01 23:44:25 UTC"
[5] "2013-01-02 03:18:48 UTC" "2013-01-02 04:41:04 UTC"