On 7/21/2009 1:16 PM, liujb wrote:
> Hello,
>
> I have a set of data that has a Date column looks like this:
> 12/9/2007
> 12/16/2007
> 1/1/2008
> 1/3/2008
> 1/12/2008
> etc.
>
> I'd like the date to look something like the follow (so that I could sort by
> date easily).
> 20071209
> 20071216
> 20080101
> 20080103
> 20080112
>
> How to do it? Thank you very much
> Julia
dates <- c("2/27/1992", "2/27/1992", "1/14/1992",
"2/28/1992", "2/1/1992")
as.character(as.Date(dates, "%m/%d/%Y"), "%Y%m%d")
[1] "19920227" "19920227" "19920114" "19920228" "19920201"
?as.Date
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