On Tue, 20 Nov 2018, Knut Krueger writes:
> I have an dataframe from with a given time format:
>
> "23:01:19"
>
> to change some given data:
>
> x=data.frame
> ("Y"=c(1:5),"TIME"=c("23:01:18","23:01:18","23:01:18","23:01:18","23:01:18"))
>
> I need to change the time increasing in seconds
>
> x=data.frame
> ("Y"=c(1:5),"TIME"=c("23:01:18","23:01:19","23:01:20","23:01:21","23:01:22"))
>
>
> Is it possible without any additional package ?
>
>
> Kind Regards Knut
>
Like so?
start <- "23:01:18"
Y <- 1:5
tmp <- as.POSIXct(paste(Sys.Date(), start))
tmp <- tmp + seq(from = 0, length.out = length(Y))
format(tmp, "%H:%M:%S")
## [1] "23:01:18" "23:01:19" "23:01:20" "23:01:21" "23:01:22"
data.frame(Y, TIME = format(tmp, "%H:%M:%S"))
--
Enrico Schumann
Lucerne, Switzerland
http://enricoschumann.net
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