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Re: st: Re: referring to groups of variables by suffixes


From   Steve Nakoneshny <scnakone@ucalgary.ca>
To   "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu>
Subject   Re: st: Re: referring to groups of variables by suffixes
Date   Wed, 28 Nov 2012 06:06:38 -0700

Mike,

All you need is to use the wildcard as a prefix.

drop *_foo
drop *_bar

This will -drop- all vars with _foo or _bar as terminal. If it so happened that you wanted to drop a var or series of vars with _foo in the middle, you would need to add another wildcard to the end of the -drop- command:

drop *_foo*

Be very careful using this technique as it is indiscriminate and you may end up dropping vars unintentionally because of a shared nomenclature.

Steve

Sent via carrier pigeon

On 2012-11-28, at 5:49 AM, "Michael Stewart" <michaelstewartresearch@gmail.com> wrote:

> Dear Statalist reader,
> 
> I am working with a large dataset (approx 600 variables) with
> different names but some of them end in similar manner
> 
> Eg:
> procedure__11_procedure_code___i
> procedure__11_procedure_date
> procedure__11_procedure_or_ind
> procedure__11_procedure_tissue_t
> procedure__11_procedure_type
> procedure__12_procedure_abnormal
> procedure__12_procedure_code_icd
> procedure__12_procedure_date
> procedure__12_procedure_ep_no
> procedure__12_procedure_location
> procedure__12_procedure_or_ind
> procedure__12_procedure_physicia
> procedure__12_procedure_tissue_t
> procedure__12_procedure_type
> procedure__12_procedure_type0
> procedure__13_procedure_abnormal
> procedure__13_procedure_anes_age
> procedure__13_procedure_anes_met
> procedure__13_procedure_code_icd
> procedure__13_procedure_date
> 
> I want to drop variables ending with procedure_tissue_t and
> procedure_anes_age. Its tedious to do it for large number of
> variables.Can you please suggest a shortcut . Is there  a shortcut to
> refer to all variables ending with procedure_tissue_t &
> procedure_anes_age.I found shortcuts to refer to variables for
> prefixes  but not for suffixes so far.
> 
> -- 
> Thank you ,
> Yours Sincerely,
> Mike.
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