[R] splitting a string based on the last underscore

[jim holtman]

try this:

> x<-c("name_a1_2.5.o","name_a2_2.53.o","name_a3_bla_1.o")
> strsplit(sub(".*?([^_]+)_([^-]+).o$", "\\1 \\2", x), ' ')
[[1]]
[1] "a1"  "2.5"

[[2]]
[1] "a2"   "2.53"

[[3]]
[1] "bla" "1"

>


On Fri, Jul 29, 2011 at 12:08 PM, Dimitri Liakhovitski
<dimitri.liakhovitski at gmail.com> wrote:
> Hello!
> Hope you could help me split the strings.
>
> I have a set of strings:
>
> x<-c("name_a1_2.5.o","name_a2_2.53.o","name_a3_bla_1.o")
>
> I need to extract from each string:
>
> 1. Its unique part that comes before the last "_", i.e.: "a1","a2","a3_bla".
> 2. The part that comes after the last "_" and before ".o" at the end,
> i.e.: 2.5, 2.53, 1.
>
> Thank you so much for your help!
>
> --
> Dimitri Liakhovitski
> marketfusionanalytics.com
>
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>



-- 
Jim Holtman
Data Munger Guru

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