Here is a slightly simpler version of the strapply solution with a
short string at the end:
> strapply("abcdefghijk", ".{1,3}")[[1]]
[1] "abc" "def" "ghi" "jk"
On Fri, Oct 2, 2009 at 8:20 AM, Gabor Grothendieck
wrote:
> That part wasn't specified so we can't say what the required behavior
> is i
This should do what you want:
x<-"abcdefghijkl"
strsplit(x, "(?<=...)", perl=T)
HTH,
STG
--
Stefan Th. Gries
---
University of California, Santa Barbara
http://www.linguistics.ucsb.edu/faculty/stgries
__
R-he
> -Original Message-
> From: r-help-boun...@r-project.org
> [mailto:r-help-boun...@r-project.org] On Behalf Of jim holtman
> Sent: Friday, October 02, 2009 5:09 AM
> To: Gabor Grothendieck
> Cc: r-help@r-project.org; J Chen
> Subject: Re: [R] break up a string into
That part wasn't specified so we can't say what the required behavior
is in that case; however, if a non-multiple of 3 were possible and if
the short string is to be emitted at the end then we can just add to
the regular expression:
> library(gsubfn)
> s <- paste(letters, collapse = "")
> strappl
But it misses the last set if not a multiple of the subset length:
> library(gsubfn)
> s <- "abcdefghijklm"
>
> # no 'm'
> strapply(s, "...")[[1]]
[1] "abc" "def" "ghi" "jkl"
>
On Fri, Oct 2, 2009 at 7:58 AM, Gabor Grothendieck
wrote:
> Try this:
>
>> library(gsubfn)
>> s <- "abcdefghijkl"
>
>>
Try this:
> library(gsubfn)
> s <- "abcdefghijkl"
> strapply(s, "...")[[1]]
[1] "abc" "def" "ghi" "jkl"
On Fri, Oct 2, 2009 at 5:36 AM, J Chen wrote:
>
> dear all,
>
> I have some very long strings and would like to break up each long string
> into multiple strings with a fixed length, e.g. to
try this:
> a <- paste(letters, collapse='')
> # partitions into lengths of 4
> indx <- seq(1, nchar(a), 4)
> a.p <- sapply(indx, function(x) substring(a, x, x+3))
>
> a.p
[1] "abcd" "efgh" "ijkl" "mnop" "qrst" "uvwx" "yz"
>
On Fri, Oct 2, 2009 at 5:36 AM, J Chen wrote:
>
> dear all,
>
> I have
dear all,
I have some very long strings and would like to break up each long string
into multiple strings with a fixed length, e.g. to break up
abcdefghijkl
into
abc, def, ghi, jkl
I tried a couple of commands but was not successful. Any help will be
appreciated.
Best,
Jimmy
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