Thanks all for your inputs.
- Original Message -
From: "Duncan Murdoch"
To: "Jeff Newmiller" , r-help@r-project.org, "Eric
Berger" , "Richard O'Keefe"
Cc: "Sebastien Bihorel"
Sent: Wednesday, July 3, 2019 12:52:55 PM
Sub
On 03/07/2019 12:42 p.m., Jeff Newmiller wrote:
Dummy columns do have some drawbacks though, if you find yourself working with
large data frames. The dummy columns waste memory and time as compared to
either reorganizing columns after the `within` or using separate sequential
`with` expression
Dummy columns do have some drawbacks though, if you find yourself working with
large data frames. The dummy columns waste memory and time as compared to
either reorganizing columns after the `within` or using separate sequential
`with` expressions as I previously suggested. I think mutate avoids
Nice suggestion, Richard.
On Wed, Jul 3, 2019 at 4:28 PM Richard O'Keefe wrote:
> Why not set all the new columns to dummy values to get the order you
> want and then set them to their final values in the order that works
> for that?
>
>
> On Thu, 4 Jul 2019 at 00:12, Kevin Thorpe
> wrote:
>
>
Why not set all the new columns to dummy values to get the order you
want and then set them to their final values in the order that works
for that?
On Thu, 4 Jul 2019 at 00:12, Kevin Thorpe wrote:
>
> > On Jul 3, 2019, at 3:15 AM, Sebastien Bihorel <
> sebastien.biho...@cognigencorp.com> wrote:
>I was hoping to stay within base R functionality.
>
>Thanks
>
>- Original Message -
>From: "Kevin Thorpe"
>To: "Sebastien Bihorel"
>Cc: "R Help Mailing List"
>Sent: Wednesday, July 3, 2019 8:11:51 AM
>Subject: Re: [R] Control the
Hi Eric,
I was hoping to avoid post-processing the result of the within call.
Sebastien
From: "Eric Berger"
To: "Sebastien Bihorel"
Cc: "R mailing list"
Sent: Wednesday, July 3, 2019 8:13:22 AM
Subject: Re: [R] Control the variable order after multiple d
Hi Kevin,
I was hoping to stay within base R functionality.
Thanks
- Original Message -
From: "Kevin Thorpe"
To: "Sebastien Bihorel"
Cc: "R Help Mailing List"
Sent: Wednesday, July 3, 2019 8:11:51 AM
Subject: Re: [R] Control the variable order aft
Hi Sebastien,
Your 'within' command returns a dataframe. So without changing the call to
within you have some options such as:
df2 <- within(df, {b<-a*2; c<-b*3})
df2[c("a","b","c")]
OR
within(df, {b<-a*2; c<-b*3})[c("a","b","c")]
OR
within(df, {b<-a*2; c<-b*3})[c(1,3,2)]
HTH,
Eric
On We
> On Jul 3, 2019, at 3:15 AM, Sebastien Bihorel
> 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, the
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 d
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