[R] help with if statement

[David Winsemius]

On Nov 21, 2012, at 9:05 AM, york8866 wrote:

> Hi all,
>
> I had a dataset A like:
>
> TIME  DV
> 0  0
> 1   10
> 5    20
> 24  30
> 36   80
> 48  60
> 72 15
>
> I would like to add 24 to those values higher than 24 in the TIME  
> column.
>
> I did the following:
>
> If (A$TIME>=24) {
> A$TIME <- A$TIME+24}
>
> It did not work.  How should I do it?

You should study the help pages for if and ifelse:

?"if"
?ifelse

-- 

David Winsemius, MD
Alameda, CA, USA