for loop with global variables
Hi r-help-bounces at r-project.org napsal dne 28.04.2011 16:59:26:
ivan <i.petzev at 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 P?edm?t 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.
To extend my example
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 at 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.
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______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide
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and provide commented, minimal, self-contained, reproducible code.