Like this?
> V <- c("fee","fie","foe")
> aq <- head(airquality) # Just to get a shorter example
> aq[V] <- 0
> aq
Ozone Solar.R Wind Temp Month Day fee fie foe
1 41 190 7.4 67 5 1 0 0 0
2 36 118 8.0 72 5 2 0 0 0
3 12 149 12.6 74 5 3 0 0 0
4 18 313 11.5 62 5 4 0 0 0
5 NA NA 14.3 56 5 5 0 0 0
6 28 NA 14.9 66 5 6 0 0 0
> On 22 Apr 2018, at 10:13 , Luca Meyer <lucam1...@gmail.com> wrote:
>
> Hi,
>
> I am a bit rusty with R programming and do not seem to find a solution to
> add a number of variables to my existing dataframe. Basically I need to add
> n=dim(d1)[1] variables to my d0 dataframe and I would like them to be named
> V1, V2, V3, ... , V[dim(d1)[1])
>
> When running the following code:
>
> for (t in 1:dim(d1)[1]){
> d0$V[t] <- 0
> }
>
> all I get is a V variable populated with zeros...
>
> I am sure there is a fairly straightforward code to accomplish what I need,
> any suggestion?
>
> Thank you,
>
> Luca
>
> [[alternative HTML version deleted]]
>
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--
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd....@cbs.dk Priv: pda...@gmail.com
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