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Re: st: dates in the 'if' condition
From
Phil Clayton <[email protected]>
To
[email protected]
Subject
Re: st: dates in the 'if' condition
Date
Tue, 9 Aug 2011 23:09:58 +0930
You can use the tq() function:
keep if time==tq(1997-4)
See -help dates_and_times-
Phil
On 09/08/2011, at 10:58 PM, [email protected] wrote:
> Hi,
> I have not used Stata in time-series context before and would like to ask
> a rather simple thing. Having the time variable in a %tq format, it displays the date label but the underlying value
> is a number. I have tried to condition with the `if' statement referring to the label instead of the underlying value, but to no avail. Is there any way to do so?
> Here is an example:
> storage display value
> variable name type format label variable label
> --------------------------------------------------------------------------------------------------------------------------------------
> time float %tq
>
> keep if time==1997q4
> 1997q4 invalid name
> r(198);
>
> keep if time=="1997q4"
> type mismatch
> r(109);
>
> Thank you,
> Tomas
>
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