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Re: st: Newbie question on creating variable


From   Tim Wade <wade_tj@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Newbie question on creating variable
Date   Mon, 1 Mar 2004 12:25:42 -0800 (PST)

I think someone will post a much more elegant
solution, but I think this will work:

gen indicator=1 if year==1965
replace indicator=2 if year==1970
sort countrycode indicator
by countrycode: gen diff=gdp[2]-gdp[1]




--- Kakatua Kutta <ambush@earthling.net> wrote:
> countrycode           year             gdp
> BAN                   1960             65
> BAN                   1965             75
> BAN                   1970             85
> CAN                   1960             25
> CAN                   1965             35
> CAN                   1970             45
> 
> Dear Stata users,
> Lets say I have the above data set. I want  to
> create a variable which measures the difference
> between the gdp in year 1970 and gdp in 1965 for
> each country. That is if "diff" is the new variable
> it would be diff = gdp(1970)-gdp (1965) for each
> country.
> I am a new user and already spent hours on this. I
> would much appreciate your help.
> Thanks in advance
> AmBush
> -- 
>
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=====
wade_tj@yahoo.com

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