[R] A simple question

[Adams, Jean]

R-help readers,

For your information ...

The package stringi is required to run Alex's code.

Alex's message was cross posted to StackOverflow, and seems to have been
answered there,
http://stackoverflow.com/questions/31398466/r-stri-locate-all-creating-a-start-and-end-matrix

Jean

On Tue, Jul 14, 2015 at 12:33 AM, Alex Kim via R-help <r-help at r-project.org>
wrote:

> Hello,
>
> I am trying to create a matrix that looks like this, using the
> stri_locate_all function.
>
>     > x <- "ABCDJAKSLABCDAKJSABCD"
>     > m <- stri_locate_all_regex(x, 'ABCD')
>     > m
>     [[1]]
>          start end
>     [1,]     1   4
>     [2,]    10  13
>     [3,]    18  21
>
> I tried converting m into a matrix, however it always seems to wrap around
> the wrong way:
>
>     > output <- matrix(unlist(m), ncol = 2, byrow = TRUE)
>     > output
>          [,1] [,2]
>     [1,]    1   10
>     [2,]   18    4
>     [3,]   13   21
>
> I want to output the start locations in the first column and the end
> locations in the second column into a matrix to look like this.
>
>          [,1] [,2]
>     [1,]     1   4
>     [2,]    10  13
>     [3,]    18  21
>
> Thank you for your help,
> Alex
>
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>
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