I have one specific and one general comment here.
Specifically, Martin is correct to underline that . is not the only missing value, but the loop in question is easily fixed by
foreach x of varlist prean pa_kurn{
replace `x' = 0 if missing(x)
}
Generally, a minimal -search missing- points to several resources. One of the very first entries, to [I] missing values, answers this question comprehensively, so it is difficult to see why it was felt necessary to send it to Statalist.
Nick
n.j.cox@durham.ac.uk
Martin Weiss
============
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.
Neil Shephard
=============
foreach x of varlist prean pa_kurn{
replace `x' = 0 if(`x' == .)
}
...is one way to skin this cat.
Martin Weiss
============
clear*
input myvar
1
3
5
.
3
6
7
end
recode myvar (mis = 0)
l
Tirthankar Chakravarty
-mvencode-
Tobias Friedli
> 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?
*
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