[R] Date calculation

[Gabor Grothendieck]

Try this:

Lines <- "5/2/2006      36560
 5/3/2006     36538
 5/4/2006     36452
 5/5/2006     36510
 5/8/2006     36485
 5/9/2006     36502
 5/10/2006     36584
 5/11/2006    36571"

DF <- read.table(textConnection(Lines), as.is = TRUE)
fmt <- "%m/%d/%Y"
DF[,1] <- as.Date(DF[,1], fmt)
date <- as.Date("5/10/2006", fmt)
which.max(DF[,1] > date)


On 6/9/06, stat stat <stat700004 at yahoo.co.in> wrote:
> Dear all R users,
>
>  Suppose I have a data frame "data" like this:
>
>  5/2/2006      36560
>  5/3/2006     36538
>  5/4/2006     36452
>  5/5/2006     36510
>  5/8/2006     36485
>  5/9/2006     36502
>  5/10/2006     36584
>  5/11/2006    36571
>
>  Now I want to create a for loop like this:
>
>  date = "5/10/2006"
> for (i in 1: 8)
>   {
>    if (data[i,1] > date) break
>   }
>
>  But I get error while executing this. Can anyone tell me the right way to do this?
>
>  Sincerely yours
>  stat
>
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