Put the "!" in front of the whole expression, not just the %in%
function. I.e.
sub <- mydata[!(mydata$group %in% c("A", "B", "E", "G")),]
Christian
On Thu, 2010-10-07 at 09:17 +1000, Emily Deomano wrote:
> Good day,
> I need to subset a data by removing several rows. I know the %in% operator,
> i.e.
>
> sub <- mydata[group %in% c("A","B","E","G"), ]
>
> What I need is the opposite, that is remove rows and/or columns. What is the
> operator for "NOT IN"? I tried (i)! %in% and (ii) ^%in% and both resulted
> in a "could not find function" error.
>
>
> Kind Regards
>
> Emily Deomano | Biometrician
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