Hi:

here is something that works on your token.list object:

> paste(lapply(token.list,paste,collapse=", "),collapse="\n")
[1] "a, b, c\nd, e"

You can't use data.frames, as your vectors dont have the same number of elements.
But you still have all the information, in a list. So you can use lapply to compute on elements of this list.
If we decompose, the lapply does:


> lapply(token.list,paste,collapse=", ")
$"1"
[1] "a, b, c"

$"2"
[1] "d, e"

On which we call a paste.

HTH,

Eric



At 12:00 1/12/2004, Wolfram Fischer wrote:
How can I get a multi line string from a vector of string tokens
in an easy manner (e.g. for the use as xlab of a plot)?

I have e.g.:
>       tokens <- letters[1:5]
[1] "a" "b" "c" "d" "e"

I search:
[1] "a, b, c\nd, e"

I tried:
> nlines <- 2
> ntokens.line <- ceiling(length(tokens) / nlines)
> token.list <- split(tokens, rep( 1:ntokens.line, each=ntokens.line, len=length(tokens)))
$"1"
[1] "a" "b" "c"
$"2"
[1] "d" "e"


I could work with a data.frame, e.g.:
> paste(collapse='\n', apply(token.df, MARGIN=1, FUN=paste, collapse=', '))


but I got an error when converting token.list to a data frame:
> token.df <- data.frame( token.list )
Error in data.frame("1" = c("a", "b", "c"), "2" = c("d", "e"), check.names = FALSE) :
arguments imply differing number of rows: 3, 2


What can I do (other than using a loop now)?

Thanks - Wolfram

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