Re: [R] bind select data frames

From: arnaud Gaboury <arnaud.gaboury_at_gmail.com>
Date: Wed, 02 Jun 2010 17:06:49 +0200

I am working with something like this :

  for (i in sel[-1]) {
dd<-data.frame(do.call(rbind, mget(paste("DailyPL",i,sep=""),envir=.GlobalEnv)),row.names=NULL)   

               }

But the result is not good. In the case where sel[-1]<-c("100420", "100421"), "dd" is only equal to "DailyPL100421"

> -----Original Message-----
> From: Joshua Wiley [mailto:jwiley.psych_at_gmail.com]
> Sent: Wednesday, June 02, 2010 4:48 PM
> To: arnaud Gaboury
> Cc: r-help_at_r-project.org
> Subject: Re: [R] bind select data frames
>
> Hello,
>
> Does this do what you are looking for?
>
> ############
> output <- NULL
> for(i in paste("DailyPL", sel, sep="")[-1]){
> output <- rbind(output, get(i))
> }
> ############
>
> If you just want to rbind all the data frames, there are ways of doing
> it without a loop too, but since you specifically asked with the
> condition for(i in sep[-1]) I did it using a loop.
>
> Best regards,
>
> Josh
>
>
> On Wed, Jun 2, 2010 at 7:24 AM, arnaud Gaboury
> <arnaud.gaboury_at_gmail.com> wrote:
> > Dear group,
> >
> > Here is my environment:
> >
> >> ls()
> > [1] "DailyPL100419" "DailyPL100420" "DailyPL100421" "dd"
> "i"
> > "l" "PLglobal" "Pos100416" "Pos100419"
> "Pos100420"
> > "Pos100421" "position"
> > [13] "result" "sel" "Trad100416" "Trad100419"
> > "Trad100420" "Trad100421" "trade"
> >
> > With "sel" the following element :
> >
> > sel <-
> > c("100419", "100420", "100421")
> >
> >
> > "DailyPL100419" , "DailyPL100420","DailyPL100421" are all data frames
> with
> > same columns names. I want to rbind them with this condition :
> >
> >
> > for (i in sel[-1])
> >
> > I have no idea how to write it.
> >
> > TY for any help
> >
> > ______________________________________________
> > R-help_at_r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide http://www.R-project.org/posting-
> guide.html
> > and provide commented, minimal, self-contained, reproducible code.
> >
>
>
>
> --
> Joshua Wiley
> Senior in Psychology
> University of California, Riverside
> http://www.joshuawiley.com/



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