Hi David,
thanks for your quick answer!
David Winsemius <dwinsem...@comcast.net> writes:
> On Oct 31, 2013, at 1:27 PM, Andreas Leha wrote:
>
>> Hi all,
>>
>> what is the recommended way to quickly (and without much burden on the
>> memory) extract the response from a formula?
>
> If you want its expression value its just form[[2]]
>
> If you wnat it evaluated in the environment of a dataframe then this should
> be fairly efficient:
>
> x <- stats::runif(20)
> y <- stats::runif(20)
> dfrm <- data.frame(x=x,y=y)
> extractResponse <- function(frm, dat) { resp <- frm[[2]]; print(resp) #
> that's optional
> fdat <- eval(resp,
> envir=dat); return(fdat) }
This is what I'll be using. Thanks again!
[...]
Regards,
Andreas
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