On Thu, May 20, 2010 at 10:31 AM, Joshua Wiley <jwiley.psych@gmail.com>wrote:

> Dear Mohan,
>
> First, I would like to modify my code slightly to:
>
> data <- rbind(data,data.frame(State="Total",t(apply(data[,-1], 2, sum,
> na.rm=TRUE))))
>
> This actually will add a 7th level to your factor automatically.  The
> reason I wanted to change from using c() to data.frame() is that if
> one uses c(), all the columns are converted to character (this has to
> do with different methods for rbind, see ?rbind particularly the
> Details and Value section which describe the different methods for
> rbind and what its behavior will be if it is using the default
> method).  This may not be an issue, but it would hamper any subsequent
> calculations you may wish to perform on your data.
>

Thanks for your great help.


Mohan L

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