[R] Dealing with parentheses within variable names

[Bert Gunter]

Oops -- forgot that you have to double the backslashes:

 So use:
 sub("\\(\\)","", names(dataFrame))

-- Bert

On Thu, Feb 28, 2013 at 1:20 PM, Bert Gunter <bgunter at gene.com> wrote:
> Please read ?regex, where it says:
>
> " Any metacharacter with special meaning may be quoted by preceding it
> with a backslash. The metacharacters in EREs are . \ | ( ) [ { ^ $ * +
> ?, but note that whether these have a special meaning depends on the
> context. "
>
> So use:
> sub("\(\)","", names(dataFrame))
>
> instead.
>
> -- Bert
>
>
> On Thu, Feb 28, 2013 at 8:08 AM, Jesus Munoz Serrano
> <jesusmunozserrano at gmail.com> wrote:
>> Dear all
>>
>> I'm having some problems with a data set that has parenthesis within the variable names. A example of this kind of variable names is the following:
>>
>>                                 fBodyGyroskewness()Z
>>
>> The case is that R is having a lot of troubles to identify the variable (probably it does understand it like a function). I've tried (among other things) to remove the parenthesis from the name using the following command:
>>
>>                                 names(dataFrame) <- sub("()","", names(dataFrame))
>>
>> but It didn't work.  Sorry if it's a silly issue but I would really appreciate if anybody could help me. Thank you very much.
>>         [[alternative HTML version deleted]]
>>
>> ______________________________________________
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>> and provide commented, minimal, self-contained, reproducible code.
>
>
>
> --
>
> Bert Gunter
> Genentech Nonclinical Biostatistics
>
> Internal Contact Info:
> Phone: 467-7374
> Website:
> http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm



-- 

Bert Gunter
Genentech Nonclinical Biostatistics

Internal Contact Info:
Phone: 467-7374
Website:
http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm