From: Petr PIKAL <petr.pikal_at_precheza.cz>

Date: Thu, 28 Apr 2011 17:17:48 +0200

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. Received on Thu 28 Apr 2011 - 15:21:42 GMT

Date: Thu, 28 Apr 2011 17:17:48 +0200

Hi

r-help-bounces_at_r-project.org napsal dne 28.04.2011 16:59:26:

> ivan <i.petzev@gmail.com>

*> Odeslal: r-help-bounces_at_r-project.org
**>
**> 28.04.2011 16:59
**>
**> Komu
**>
**> jim holtman <jholtman_at_gmail.com>
**>
**> Kopie
**>
**> r-help_at_r-project.org
**>
**> Předmět
**>
**> Re: [R] for loop with global variables
**>
**> Hi,
**>
**> thank you for the response. What I actually want to do is pick
*

automatically

> the results of the various outputs (which I have already defined as

*> variables, e.g. output.1,output.2,etc) and insert them into a table. The
**> list variable would be redundant since in order to create the data frame
*

I

> would rather type data.frame(results=rbind(output.1,output.2,etc.)). If

I

> had 100 outputs, this would be much work. I rather meant something like

*> for(i in 1:100) {x=data.frame(results=rbind(output.[[i]]))}, which does
*

not

> work though. It says that object "output." cannot be found.

*>
**> Kind Regards
*

That is the problem. If you used list in the first time you could save yourself much problems. BTW - data frame is also a list with some special formating.

for(i in 1:3) {

lll[[i]] <- sample(letters,3)

names(lll)[i] <- LETTERS[i]

}

lll

$A

[1] "x" "t" "h"

$B

[1] "c" "m" "w"

$C

[1] "n" "s" "e"

as.data.frame(lll)

A B C

1 x c n

2 t m s

3 h w e

Regards

Petr

*>
**>
**>
*

> On Thu, Apr 28, 2011 at 4:31 PM, jim holtman <jholtman@gmail.com> wrote:

*>
**> > Yes you can, but there is not enough explaination as to what you
**> > really want to do. I would suggest that you look at using a 'list'
**> > instead of individual objects:
**> >
**> > myList <- list(output.1 = rbind('a','b'), output.2 = rbind('c','d'),
*

...)

*> >
*

> > Then you can use 'lapply' to operation on the elements.

*> >
**> > On Thu, Apr 28, 2011 at 10:16 AM, ivan <i.petzev_at_gmail.com> wrote:
**> > > Hi,
**> > >
**> > > is there a possibility to use global variables in a for loop. More
**> > > specifically, I want to do the following:
**> > >
**> > > output.1<-rbind("a","b")
**> > > output.2<-rbind("c","d")
**> > > output.3<-rbind("e","f")
**> > > .
**> > > .
**> > > .
**> > > output.n<-rbind(...,...)
**> > >
**> > > next I want to create a data frame with two columns:
**> > >
**> > > Outputs
**> > > Values output.1 "a","b" output.2 "c","d" output.3 "e","f" .
**> > > .
**> > > output.n …,…
**> > > My problem is that I do not how to define a loop over global
*

variables.

> > > Anybody an idea?

*> > >
**> > > Thanks.
**> > >
**> > > [[alternative HTML version deleted]]
**> > >
**> > >
**> > > ______________________________________________
**> > > 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.
**> > >
**> > >
**> >
**> >
**> >
**> > --
**> > Jim Holtman
**> > Data Munger Guru
**> >
**> > What is the problem that you are trying to solve?
**> >
**>
**> [[alternative HTML version deleted]]
**>
**> ______________________________________________
**> 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.

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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. Received on Thu 28 Apr 2011 - 15:21:42 GMT

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