[R] what is the "NOT IN" operator

[Christian Raschke]

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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