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st: RE: Re: Questions on Stata


From   "Nick Cox" <[email protected]>
To   <[email protected]>
Subject   st: RE: Re: Questions on Stata
Date   Mon, 13 Dec 2004 15:06:50 -0000

In addition to possibilities (and possible problems) 
flagged by others, I note the -egen, seq()- function. 

egen id = seq(), block(3)
egen time = seq(), to(3) 

Nick 
[email protected] 

Dongshu Ou

> > >   data set looks like
> > >
> > >   var1   var2   var3
> > >
> > >   80     30      1
> > >   75     30      1
> > >   85     30      1
> > >   76     33      1
> > >   78     33      1
> > >   75     33      1
> > >   80     29      2
> > >   82     29      2
> > >   83     29      2
> > >   ...................
> > >
> > >  Say, var1 is an indicator measured at 3 different times of each
> > > individual. var2 is age, var3 indicates "group"
> > >
> > >  I want to generate a variable to indicate every three of the var1
> > > belongs to the same person, and a variable indicating three
> > > different times for the same person , which would be looked like:
> > >
> > >   var1   var2   var3    Var4   Var5
> > >
> > >   80     30      1       1       1
> > >   75     30      1       1       2
> > >   85     30      1       1       3
> > >   76     33      1       2       1
> > >   78     33      1       2       2
> > >   75     33      1       2       3
> > >   80     29      2       3       1
> > >   82     29      2       3       2
> > >   83     29      2       3       3
> > >   ................... ..........

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