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Posted: **Thu May 20, 2010 1:53 am**

Hi
I want to extend a quarterly data series called Y which is currently from 1985q3 to 2009q2, by 2 observations: 2009q3 and 2009q4; on its average growth rate (dlog) of the last 3 periods.
Cheers, Riaz

Posted: **Thu May 20, 2010 7:52 am**

Code: Select all


smpl 2008q4 2009q2
scalar growth = @mean(dlog(y))
smpl 2009q3 2009q4
y = (1+growth)*y(-1)

Something like that should do it.

Posted: **Thu May 20, 2010 9:09 pm**

Thanks

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