Hi Adam,
Looks like you have a matrix or data frame and want to change one or
more observations to NA. I think this will do the trick:
# assume the matrix or data frame is named "ajdat"
randomNA<-function(x,nNA=1) {
dimx<-dim(x)
x[sample(1:dimx[1],nNA),sample(1:dimx[2],nNA)]<-NA
return(x)
}
So if you want three NAs inserted, call:
randomNA(ajdat,3)
Jim
On Fri, Jul 6, 2018 at 6:28 AM, Adam Z. Jabir <adam.z.ja...@outlook.fr> wrote:
> Hi,
>
> I want to simulate missing at random for my dataset. Do you know an easy way
> to do it?
>
> I want to try not to have the missing’s for the same observations. I mean if
> one observation is been selected randomly to have missing I don’t want to
> have all the var of the same obs missing.
>
> I want to be able to choose rate of missing that should be applied.
>
> Thanks,
>
> Adam
>
>
> Envoyé à partir de Outlook<http://aka.ms/weboutlook>
>
> [[alternative HTML version deleted]]
>
>
> ______________________________________________
> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
