No sorry Rui,
In the expression result <- strsplit(sub(close.par, "", dd1), open.par)
there is close.par, ''", open.par
I probably am just blind but I don't understand what it is doing.
John Kane
Kingston ON Canada
> -----Original Message-----
> From: ruipbarra...@sapo.pt
> Sent: Sat, 07 Jul 2012 23:08:19 +0100
> To: jrkrid...@inbox.com
> Subject: Re: [R] Splitting a character vector.
>
> Hello,
>
> Sorry, but I don't understand, you're asking about 4 single quotes, the
> double quotes in open.par are just opening and closing the pattern, a
> character string.
>
> Rui Barradas
>
> Em 07-07-2012 23:03, John Kane escreveu:
>> Thanks Rui
>> It works perfectly so far on the test and real data.
>>
>> The annoying thing is that I had tried , or thought I'd tried the
>> open.par format and keep getting an error.
>>
>> It looks like I had failed to add the '''', in the term. What is it
>> doing?
>>
>>
>>
>> John Kane
>> Kingston ON Canada
>>
>>
>>> -----Original Message-----
>>> From: ruipbarra...@sapo.pt
>>> Sent: Sat, 07 Jul 2012 22:55:41 +0100
>>> To: jrkrid...@inbox.com
>>> Subject: Re: [R] Splitting a character vector.
>>>
>>> Hello,
>>>
>>> Try the following.
>>>
>>> open.par <- " \\(" # with a blank before '('
>>> close.par <- "\\)"
>>> result <- strsplit(sub(close.par, "", dd1), open.par)
>>>
>>>
>>> Why the two '\\'? Because '(' is a meta-character so it must be
>>> escaped.
>>> But '\' is a meta character so it must also be escaped.
>>>
>>> Then choose the right way to separate the two, maybe something like
>>>
>>> ix <- rep(c(TRUE, FALSE), length(result))
>>> unlist(result)[ix]
>>> unlist(result)[!ix]
>>>
>>>
>>> Hope this helps,
>>>
>>> Rui Barradas
>>>
>>> Em 07-07-2012 22:37, John Kane escreveu:
>>>> 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"))
>>>>
>>>> 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)"
>>>>
>>>> Any pointers would be appreciated
>>>> Thanks
>>>> John Kane
>>>> Kingston ON Canada
>>>>
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