Doesn't work -- you lose column names.

Try this instead:

yourframe[,30:51] <- cbind( newcolumn,yourframe[,30:50])

Adjust column names after via:

names(yourframe) [30:51] <- c(newcolname,names(yourframe[30:50])

Cheers,
Bert

On Mon, Aug 1, 2011 at 10:10 AM, Sarah Goslee <sarah.gos...@gmail.com> wrote:
> x <- cbind(x[,1:29], newcolumn, x[,30:ncol(x)])
>
> On Mon, Aug 1, 2011 at 12:59 PM, Bansal, Vikas <vikas.ban...@kcl.ac.uk> wrote:
>> Dear all,
>>
>> I have a very simple question.I have data frame of 50 columns and i want to 
>> insert a column in 30th position.But i do not want to delete that column.Is 
>> it possible to include a column in between, so that new values are in 30th 
>> column and 30 th column is now 31st and 31st is 32nd......so on and 50th 
>> column is 51st..?I will be very thankful to you.
>>
>>
>
>
>
> --
> Sarah Goslee
> http://www.functionaldiversity.org
>
> ______________________________________________
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> and provide commented, minimal, self-contained, reproducible code.
>



-- 
"Men by nature long to get on to the ultimate truths, and will often
be impatient with elementary studies or fight shy of them. If it were
possible to reach the ultimate truths without the elementary studies
usually prefixed to them, these would not be preparatory studies but
superfluous diversions."

-- Maimonides (1135-1204)

Bert Gunter
Genentech Nonclinical Biostatistics

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