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AW: st: Replace missing values by 0
From
"Martin Weiss" <[email protected]>
To
<[email protected]>
Subject
AW: st: Replace missing values by 0
Date
Mon, 9 Aug 2010 11:06:27 +0200
<>
Stata even forgives the missing blank after -if-! Amazing!
*************
clear*
inp prean pa_kurn
2 3
. 5
. 3
. .
4 5
end
foreach x of varlist prean pa_kurn{
replace `x' = 0 if(`x' == .)
}
l
*************
One problem with this "first-principles" approach is that you have to
compare explicitly with all missing values, i.e. also the extended ones.
-recode- can help avoid this problem.
HTH
Martin
-----Ursprüngliche Nachricht-----
Von: [email protected]
[mailto:[email protected]] Im Auftrag von Neil Shephard
Gesendet: Montag, 9. August 2010 11:01
An: [email protected]
Betreff: Re: st: Replace missing values by 0
On Mon, Aug 9, 2010 at 8:55 AM, Hobst <[email protected]> wrote:
> I have two variabled called "prean" and "pa_kum" that contain missing
values.
> These missing values i would like to replace by 0 (zero). What command can
i
> use to do this?
foreach x of varlist prean pa_kurn{
replace `x' = 0 if(`x' == .)
}
...is one way to skin this cat.
> Thanks in advance for your support. Regards
This is a very basic question though. You may well benefit from
reading the Users Guide and/or taking the Stata Net Course 101 :
Introduction to Stata (see http://www.stata.com/netcourse/nc101.html).
Neil
--
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