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Re: st: wildcard in numeric variable
From
Nick Cox <[email protected]>
To
[email protected]
Subject
Re: st: wildcard in numeric variable
Date
Fri, 1 Jun 2012 09:47:11 +0100
Wildcards don't apply to numeric values.
... if substr(string(numvar), 1, 4) == "9999"
is the simplest solution that occurs to me. No need for new variables,
-tostring- or any regex machinery.
Nick
On Fri, Jun 1, 2012 at 9:40 AM, Colin Campbell
<[email protected]> wrote:
>
> Dear Statalist,
>
> I have a dataset in which a numeric variable cv contains values that need to be coded as missing.
> There are a variety of numeric values 9999, 99999, 999999 etc that need to be recoded.
> While I could replace each value individually, I wondered if there is a way to use wildcards with numeric variables such that e.g.
>
>
> replace numvar =. if numvar == 9999*
>
> would work. I have a workaround using string variables as follows
>
> tostring cv, gen(cv_str)
> gen cv_mis = regexm(cv_str, "9999")
> replace cv =. if cv_mis ==1
> drop cv_mis cv_str
>
> Is there a more elegant way to achieve this without resorting to strings?
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