Hi,

If the dates are the same format and the same length you can try this :

dates<-c("1/1/2009","2/1/2009","3/1/2009")

dates_new<-as.Date(paste(substr(dates,1,3),substr(dates,7,8),sep="/"),format="%d/%m/%y"), 
you can change the format to "%m/%d/%y"

Regards
M


Le 16/11/11 15:12, arunkumar1111 a écrit :
> Hi
>
> I have a data frame and i need to change the date format in it.
> my dataframe
>
> X Date
> 1 1/1/2009
> 2 2/1/2009
> 3 3/1/2009
>
> I need to change it to 2009-01-01
>
>
> --
> View this message in context: http://r.789695.n4.nabble.com/changing-date-format-in-a-dataframe-tp4076411p4076411.html
> Sent from the R help mailing list archive at Nabble.com.
>
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>


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