date format

#Or
?paste(dat[,3],dat[,2],dat[,1],sep=".")
#[1] "4.1.2011" "5.2.2012" "6.3.2013"
#
?as.character(interaction(dat[,3:1]))


?paste(sprintf("%02d",dat[,3]),sprintf("%02d",dat[,2]),dat[,1],sep=".")
#[1] "04.01.2011" "05.02.2012" "06.03.2013"


A.K.

Hello,

Maybe something like the following.

dat <- data.frame(yyyy = 2011:2013, mm = 1:3, dd = 4:6)

apply(dat, 1, function(x) paste(rev(x), collapse = "."))


Hope this helps,

Rui Barradas

Em 28-11-2013 13:54, eliza botto escreveu:

Dear Users of R,
I have a data frame with three column, the first column contains years, the second one months and third one, the days (cbind(yyyy mm dd)). I want to combine them so that i have one column with the date format as (dd.mm.yyyy).
Is there a way of doing that.
Thanks in advance,
Eliza ??? ???  ??? ?  ??? ??? 
??? [[alternative HTML version deleted]]

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