Hi Kevin,
I was hoping to stay within base R functionality.
Thanks
----- Original Message -----
From: "Kevin Thorpe" <kevin.tho...@utoronto.ca>
To: "Sebastien Bihorel" <sebastien.biho...@cognigencorp.com>
Cc: "R Help Mailing List" <r-help@r-project.org>
Sent: Wednesday, July 3, 2019 8:11:51 AM
Subject: Re: [R] Control the variable order after multiple declarations using
within
> On Jul 3, 2019, at 3:15 AM, Sebastien Bihorel
> <sebastien.biho...@cognigencorp.com> wrote:
>
> Hi,
>
> The within function can be used to modify data.frames (among other objects).
> One can even provide multiple expressions to modify the data.frame by more
> than one expression. However, when new variables are created, they seem to be
> inserted in the data.frame in the opposite order they were declared:
>
>> df <- data.frame(a=1)
>> within(df, {b<-a*2; c<-b*3})
> a c b
> 1 1 6 2
>
> Is there a way to insert the variables in an order consistent with the order
> of declaration (ie, a, b, c)?
>
One way is to use mutate() from the dplyr package.
> Thanks
>
> Sebastien
>
> ______________________________________________
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--
Kevin E. Thorpe
Head of Biostatistics, Applied Health Research Centre (AHRC)
Li Ka Shing Knowledge Institute of St. Michael's
Assistant Professor, Dalla Lana School of Public Health
University of Toronto
email: kevin.tho...@utoronto.ca Tel: 416.864.5776 Fax: 416.864.3016
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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