Hi.
May be this:

df = data.frame( A=c('a','b','c'), B=c(1,2,3), C=c(10,20,30),
stringsAsFactors=FALSE)

newrow = c('X', 100, 200)

rbind(df,newrow)[c(1,4,2,3),]

Andrija


On Thu, Nov 24, 2011 at. 6:05 PM, Sammy Zee <szee2007@gmail.com> wrote:

> Is there easy way (without copying the existing rows to a temporary
> location and copying back) to add a new row to a specific index location in
> an existing data frame?
>
> Example
>
> df = data.frame( A= c('a','b','c'), B=c(1,2,3), C=(10,20,30))
>
> newrow = c('X', 100, 200)
>
> I want to add the newrow as the second row to the data frame df
>
> Please suggest a solution that is efficient for a data frame that can have
> millions of rows, and I want to add a new row in any given index location
> of the data frame.
>
> Thanks,
> Sammy
>
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