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This code works for me with the same executable for Stata 10.1:
***
clear*
set obs 10
forv i=1/12{
gen m20050`i'=runiform()<.8
}
collapse m20????
li
***
Note your specification of the -varlist- for -collapse- only encompasses the first nine variables, "m200501" to "m200509".
HTH
Martin
-------- Original-Nachricht --------
> Datum: Mon, 28 Dec 2009 11:19:25 -0600
> Von: "JD" <[email protected]>
> An: [email protected]
> Betreff: st: stata mp 10.1 issue
> After I changed wmpstata.exe with the one on 2009 Oct. Collapse command
> became erratic. With large number of variables collapsed, some variables
> are omitted in the outcome. For instance I have variables m200501 –
> m200512
> and I did “collapse m20???? Then sometimes m200506 (or any other
> variable)
> is not collapsed but disappeared. Is there anybody with similar
> experience?
>
> JD
>
>
> *
> * For searches and help try:
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> * http://www.stata.com/support/statalist/faq
> * http://www.ats.ucla.edu/stat/stata/
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