[R] Splitting a character vector.
John Kane
jrkrideau at inbox.com
Sun Jul 8 15:57:45 CEST 2012
Works perfectly. Thank you very much indeed.
John Kane
Kingston ON Canada
> -----Original Message-----
> From: dwinsemius at comcast.net
> Sent: Sat, 7 Jul 2012 21:45:58 -0400
> To: jrkrideau at inbox.com
> Subject: Re: [R] Splitting a character vector.
>
>
> On Jul 7, 2012, at 5:37 PM, John Kane wrote:
>
>> I am lousy at simple regex and I have not found a solution to a
>> simple problem.
>>
>> I have a vector with some character values that I want to split.
>> Sample data
>> dd1 <- c( "XXY (mat harry)","XXY (jim bob)", "CAMP (joe blow)",
>> "ALP (max jack)")
>>
>> Desired result
>> dd2 <- data.frame( xx = c("XXY", "XXY", "CAMP", "ALP"), yy =
>> c("mat harry", "jim bob" , "joe blow", "max jack"))
>
> data.frame(xx=sub("(\\s\\(.+$)", "", dd1),
> yy=sub("(.+)(\\s\\()(.+)(\\)$)", "\\3", dd1) )
> xx yy
> 1 XXY mat harry
> 2 XXY jim bob
> 3 CAMP joe blow
> 4 ALP max jack
>
>
>>
>> I thought I should be able to split the characters with strsplit but
>> either I am misunderstanding the function or don't know how to
>> escape a "(" properly in an effort to at least get "XXY" "(mat
>> harry)"
>>
>
>
> David Winsemius, MD
> Heritage Laboratories
> West Hartford, CT
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