[R] problem with as.Date

Gabor Grothendieck
Wed, 11 Jun 2008 23:26:41 -0000

Using

xd <- structure(list(V1 = c("6/6", "5/27",
"5/16", "5/2")), .Names "V1", row.names = c(NA,
-4L), class = "data.frame")

Try:

> as.Date(paste("2008", xd$V1, sep = "/"),
"%Y/%m/%d")
[1] "2008-06-06" "2008-05-27" "2008-05-16"
"2008-05-02"

See R News 4/1 article on dates.

On Wed, Jun 11, 2008 at 6:22 PM, Mr Natural <drstrong at ucdavis.edu>
wrote:
>
> Data into R from Excel csv file
> xd<-read.csv("court.dates1.txt",as.is=T, header = F)
>
>> str(xd)
> 'data.frame':   5 obs. of  1 variable:
>  $ V1: chr  "6/6" "5/27" "5/16"
"5/2" ...
>
>
>>xd
>
>  V1
> 1  6/6
> 2 5/27
> 3 5/16
> 4  5/2
> 5 4/29
>
> cdates <- as.Date(xd,  format = " %m/ %d")
>
> Error in as.Date.default(xd, format = " %m/ %d") :
>  do not know how to convert 'xd' to class "Date"
>
>
> Suggestions appreciated,
>
> Don
>
>
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