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Re: st: How to drop observations according to date?
From
Nick Cox <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: How to drop observations according to date?
Date
Fri, 21 Jun 2013 14:53:05 +0100
consequence of a display format.
These are monthly dates so
... if date < ym(2000, 1)
will be one solution.
I find out about functions such as -ym()- not by Googling but by
looking at the help. I know that there will be functions that yield
monthly dates as results, which will solve the problem. -help
functions- is where I start.
The fact is that dates and times are a proverbial pain whatever you
do; but it's all documented.
Nick
[email protected]
On 21 June 2013 14:30, Edward Crawley <[email protected]> wrote:
> Dear listers,
>
> I have a panel dataset and I would like to drop all observations,
> which are dated before 2000m1. I used -drop if date < 2000m1-, but
> Stata doesn't understand this command. My date variable is identified
> as a panel data date via -xtset-.
>
> It seems like a very easy question, but I couldn't figure it out and I
> couldn't find proper solutions on the internet.
>
> Appreciate any help,
>
> Edward
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