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Re: st:how to delete anything in the bracket for a string variable


From   Amanda Fu <mandy.fu1@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st:how to delete anything in the bracket for a string variable
Date   Sun, 9 Oct 2011 09:24:29 -0400

Dear Tirthankar and Nick,

Thank you both  for your help.  I learned how to deal with this task
from your suggestions.

Sorry that I confused () parentheses with [] brackets. Thanks to Nick
for pointing this out.

Best regards,
Amanda Fu

On Sun, Oct 9, 2011 at 3:27 AM, Nick Cox <njcoxstata@gmail.com> wrote:
> Tirthankar's kind of solution is much to be preferred, but there is no
> reason to suppose that -substr()- does not work here
>
> In Amanda's examples, this should work:
>
> replace name = substr(name, 1, strpos(name, "(") - 1)
>
> This is not in one-to-one correspondence with Tirthankar's solution,
> as it assumes that the important stuff comes first, and it also zaps
> anything after the ")", but the solution is then just more
> complicated, not impossible.
>
> Many people call () parentheses, sometimes round brackets; [] brackets
> or square brackets, and {} braces or curly brackets.
>
> Either way, -trim()- is also useful here to remove any leading or
> trailing spaces.
>
> Nick
>
> On Sun, Oct 9, 2011 at 6:05 AM, Tirthankar Chakravarty
> <tirthankar.chakravarty@gmail.com> wrote:
>
>> This should work:
>>
>> ***********************************************
>> clear*
>> input id   str50     name
>> 1         "John (joined before 2005)"
>> 2         "Jenny"
>> 3         "Kai (joined in 2006; left in 2008)"
>> 4         "Tom (inconsistent dates)"
>> end
>> replace name = regexr(name, "\((.)+\)", "")
>> li
>> ***********************************************
>>
>> T
>>
>> On Sat, Oct 8, 2011 at 9:17 PM, Amanda Fu <mandy.fu1@gmail.com> wrote:
>
>>> I wonder if someone can give me some suggestion on delete anything in
>>> the bracket for a string variable. A string variable in my data set
>>> has some notes in bracket for part of the observations. I want to
>>> remove the brackets and anything in them
>>>
>>> An example is like:
>>> -------------------------
>>> id        name
>>> 1         John (joined before 2005)
>>> 2         Jenny
>>> 3         Kai (joined in 2006; left in 2008)
>>> 4         Tom (inconsistent dates)
>>> -------------------------.......
>>> I would like to delete anything in the () for the variable "name" so
>>> that only names are kept. But the content in the brackets are not the
>>> same. I think that causes the -substr- does not work for this purpose.
>
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