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Posted: **Mon Feb 21, 2011 4:23 am**

Hello,

Say I want to compound annually a series like the CPI index at a rate of 3%p.a. I can't come up with anything better than the following code:

Code: Select all


create a 2010 2030
series inf=na
inf(1)=100
!infl_rt=0.03

%lastvaldt=@otod(@ilast(inf))
!lastval=@last(inf)
smpl {%lastvaldt} @last

series inf=!lastval*(1+!infl_rt)^@trend
smpl @all

Is there any more compact way of achieving the same result?

Thanks,

Javier

Posted: **Mon Feb 21, 2011 6:21 pm**

Code: Select all


inf = 100
smpl @first+1 @last
inf = inf(-1)*1.03

Posted: **Tue Feb 22, 2011 9:43 am**

Ah! inf=inf(-1)*1.03 did not work because I only had 1 non-na data point so the trick is then to fill the series from the beginning.

Thanks,

Javier

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