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st: RE: 回复： st: AW: 回复： AW: 回复： st: re: missing string entry
From
"Nick Cox" <[email protected]>
To
<[email protected]>
Subject
st: RE: 回复： st: AW: 回复： AW: 回复： st: re: missing string entry
Date
Tue, 9 Mar 2010 09:44:39 -0000
The Stata FAQ does advise
"The current version of Stata is 11. Please specify if you are using an earlier version; otherwise, the answer to your question is likely to refer to commands or features unavailable to you."
See http://www.stata.com/support/faqs/res/statalist.html#stata
On the first, you can not use -set obs 1- to decrease the number of observations. You need to issue -clear- first.
Also, please edit posts, as also advised in the FAQ.
Nick
[email protected]
lydia huang
i typed -set obs 1-,
it came out -obs must be between 28032 and 231975
r(198);- in red,
typed -gen public_medical_insurance_no=""-,
it came out -public_medical_insurance_no already defined
r(110);-
typed -replace public_medical_insurance_no="null" if missing ( public_medical_insurance_no)-
it came out -missing not found
r(111);-
Martin Weiss
> Spell out the function as "missing()":
>
>
> *************
> clear*
> set obs 1
> gen x=""
> replace x="null" if missing(x)
> *************
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