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Re: st: Newbie question on creating variable


From   Philip Ryan <philip.ryan@adelaide.edu.au>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Newbie question on creating variable
Date   Tue, 02 Mar 2004 09:31:05 +1030

Another approach involves use of -reshape- :

   reshape wide gdp, i(countrycode) j(year)
   gen diff = gdp1970 - gdp1965

and then, optionally:

   reshape long


Phil







At 02:14 PM 1/03/2004 -0500, you 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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