Hi,
Many thanks for this..
I did try expand but after that I tried replace year[_n+1]=year+1 and of
course I got the weights not allowed error
Did not occur to me to use the _n.
Many thanks
rajesh
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Jeph Herrin
Sent: 20 May 2007 16:01
To: [email protected]
Subject: Re: st: generate observations by group/levels- aplologies if this
message appears more than once -
To increase the number of records by 2 years, -expand- by 3:
expand 3
bysort Co year : replace year=year+_n-1
hth,
Jeph
Rajesh Tharyan wrote:
> Hi all,
>
>
> I am trying the do the following. If I have a data set which looks like
this
>
> Co year
> A 1986
> A 1999
> B 1987
>
> I want to say increase the observations for each company year by any
number
> of years I specify. Lets assume expanding by two years.
>
> So the resulting dataset will look like
>
> Co year
>
> A 1986
> A 1987
> A 1988
> A 1999
> A 2000
> A 2001
> B 1987
> B 1988
> B 1989
>
> I cant set obs or expand by a grouping variable. I was then trying to
split
> each file into several files first based on levels of co and then levels
of
> year, then expand , fillinin missing values etc. But that route is making
> the process unnecessarily complicated (I think)
>
> Is there a more staright forward way to do this
>
> Any help is valuable
>
> Thanks
> rajesh
>
>
>
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