Skip to content

How to get all list item to one string variable

9 messages · purushothaman, Sarah Goslee, arun +4 more

arun
# 
Hi,

If I understand it correctly, probably this is what you want:
a<-list("abc","def","ghi")
?a1<-unlist(a)
?paste(a1[1],a1[2],a1[3],sep=" ")
[1] "abc def ghi"


A.K.



----- Original Message -----
From: purushothaman <purushothaman.b at ge.com>
To: r-help at r-project.org
Cc: 
Sent: Thursday, July 12, 2012 8:22 AM
Subject: Re: [R] How to get all list item to one string variable

hi,

sorry it's not 2 different list all item in same list like this

a[1]="abc"
a[2]="def"
...
output ="abc def ..."

Thanks
B.Purushothaman

--
View this message in context: http://r.789695.n4.nabble.com/How-to-get-all-list-item-to-one-string-variable-tp4636283p4636287.html
Sent from the R help mailing list archive at Nabble.com.

______________________________________________
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.
Ivan Calandra
# 
Hi,

What you did is equivalent to, but more complicated (and slower as well 
I guess) than:
paste(a, collapse="")

Ivan

--
Ivan CALANDRA
Universit? de Bourgogne
UMR CNRS/uB 6282 Biog?osciences
6 Boulevard Gabriel
21000 Dijon, FRANCE
+33(0)3.80.39.63.06
ivan.calandra at u-bourgogne.fr
http://biogeosciences.u-bourgogne.fr/calandra



Le 12/07/12 14:54, arun.gurubaramurugeshan a ?crit :

Try this...

a<-c("abc","def","ghi","klm","nop","qrs","tuv","wxyz")
b<-data.frame()
for (i in 1:length(a)){
b<-paste(b,a[i],sep="")
}
print(b)


Thanks
Arun
---
Petr Savicky
#
On Thu, Jul 12, 2012 at 05:22:45AM -0700, purushothaman wrote:
Hi.

Try this

  a <- list("abc", "def", "ghi")
  paste(a, collapse=" ")

  [1] "abc def ghi"

Hope this helps.

Petr Savicky.
arun
# 
HI,
Much more simplified code that my previous one.


?a<-list("abc","def","ghi", "jkl", "mno", "pqr")
?paste(a[],sep=" ")
[1] "abc" "def" "ghi" "jkl" "mno" "pqr"


A.K.



----- Original Message -----
From: purushothaman <purushothaman.b at ge.com>
To: r-help at r-project.org
Cc: 
Sent: Thursday, July 12, 2012 8:22 AM
Subject: Re: [R] How to get all list item to one string variable

hi,

sorry it's not 2 different list all item in same list like this

a[1]="abc"
a[2]="def"
...
output ="abc def ..."

Thanks
B.Purushothaman

--
View this message in context: http://r.789695.n4.nabble.com/How-to-get-all-list-item-to-one-string-variable-tp4636283p4636287.html
Sent from the R help mailing list archive at Nabble.com.

______________________________________________
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.
MacQueen, Don
# 
First of all, although the question uses the term "list", the object named
'a' is clearly not a list as R defines the term. It is a vector.

Thus a better example answer is

  a <- c('abc', 'def')
  paste(a , collapse=' ')

and this works for however many elements there are in the vector a.

The example
  a <- list("abc", "def", "ghi")
  paste(a, collapse=" ")
works, but only because the paste() function first converts its arguments
to character strings.


I only mention this because it's important (especially for those new to R)
to understand the distinction between lists and vectors, even if they
occasionally appear to behave the same way. Consider this:
[[1]]
[1] "abc"

[[2]]
[1] "def"

[[3]]
[1] 3 4 5 6

[[4]]
[1] "ghi"
[1] "abc def 3:6 ghi"



And I did not expect that result, but something like this:
[1] "abc" "def" "3"   "4"   "5"   "6"   "ghi"
[1] "abc def 3 4 5 6 ghi"