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st: AW: 回复： AW: 回复： st: re: missing string entry
From
"Martin Weiss" <[email protected]>
To
<[email protected]>
Subject
st: AW: 回复： AW: 回复： st: re: missing string entry
Date
Tue, 9 Mar 2010 09:40:28 +0100
<>
Spell out the function as "missing()":
*************
clear*
set obs 1
gen x=""
replace x="null" if missing(x)
*************
HTH
Martin
-----Ursprüngliche Nachricht-----
Von: [email protected] [mailto:[email protected]] Im Auftrag von lydia huang
Gesendet: Dienstag, 9. März 2010 09:39
An: [email protected]
Betreff: st: 回复： AW: 回复： st: re: missing string entry
yes, i am using stata7, then how can i replace all the missing string entries with "null" in stata7?
--- 10年3月9日，周二, Martin Weiss <[email protected]> 写道：
> 发件人: Martin Weiss <[email protected]>
> 主题: AW: 回复： st: re: missing string entry
> 收件人: [email protected]
> 日期: 2010年3月9日,周二,下午4:15
>
> <>
>
>
>
> -mi()- was introduced in Stata 8 (-help whatsnew7to8-), so
> if you are a Stata 7 user, then the mystery is solved. If
> not, it lingers on...
>
>
>
> HTH
> Martin
>
> -----Ursprüngliche Nachricht-----
> Von: [email protected]
> [mailto:[email protected]]
> Im Auftrag von lydia huang
> Gesendet: Dienstag, 9. März 2010 04:46
> An: [email protected]
> Betreff: st: 回复： st: re: missing string entry
>
> i typed
>
> replace nosocomial_infection = "NULL" if
> mi(nosocomial_infection)
>
> and it says "unknown function mi()".
> what does this mean? how solve it? I want to change all the
> missing string variables into "null", do i type the
> following?
>
> replace _all = "NULL" if mi(_all)
>
> Best wishes
> Lydia
>
> --- 10年3月9日，周二, Kit Baum <[email protected]>
> 写道：
>
> > 发件人: Kit Baum <[email protected]>
> > 主题: st: re: missing string entry
> > 收件人: [email protected]
> > 日期: 2010年3月9日,周二,上午10:36
> > <>
> > How to convert all the missing string entry into
> entry
> > shows "null"?
> >
> > replace myvar = "NULL" if mi(myvar)
> >
> > Kit Baum | Boston
> College
> > Economics & DIW
> > Berlin | http://ideas.repec.org/e/pba1.html
> >
>
> >
> An
> > Introduction to Stata Programming
> > | http://www.stata-press.com/books/isp.html
> > An Introduction to Modern Econometrics
> > Using Stata | http://www.stata-press.com/books/imeus.html
> >
> >
> > *
> > * For searches and help try:
> > * http://www.stata.com/help.cgi?search
> > * http://www.stata.com/support/statalist/faq
> > * http://www.ats.ucla.edu/stat/stata/
> >
>
>
>
>
>
> *
> * For searches and help try:
> * http://www.stata.com/help.cgi?search
> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
>
>
> *
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> * http://www.ats.ucla.edu/stat/stata/
>
*
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