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Re: st: RE: Time series with moving average growth rate


From   Humnath Bhandari <hnbgulmi@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: RE: Time series with moving average growth rate
Date   Tue, 3 Jun 2008 17:37:06 -0700 (PDT)

Dear Martin,
 
It works well.  I was able to calculate moving growth rate for many countries for several years in a single click. I greatly appreciate your help. Thank you.
 
Humnath



----- Original Message ----
> From: Martin Weiss <martin.weiss@uni-tuebingen.de>
> To: statalist@hsphsun2.harvard.edu
> Sent: Wednesday, June 4, 2008 12:31:04 AM
> Subject: st: RE: Time series with moving average growth rate
> 
> Check this for consistency with what you had in mind:
> 
> **********
> cap drop grrate*
> 
> g grrate1= country1[_n]/country1[_n-1]-1
> g grrate2= country2[_n]/country2[_n-1]-1
> g grrate3= country3[_n]/country3[_n-1]-1
> 
>         qui foreach level in 2000 2001 2002 2003 2004 2005{
>             su grrate1 if year<=`=`level'+2'&year>=`level', mean
>             noi di in red "Avg. Growth rate in country 1 in
> period `level' to `=`level'+2': " r(mean)
>         }
>         
>                 qui foreach level in 2000 2001 2002 2003
> 2004 2005{
>             su grrate2 if year<=`=`level'+2'&year>=`level', mean
>             noi di in red "Avg. Growth rate in country 2 in
> period `level' to `=`level'+2': " r(mean)
>         }
>         
>                 qui foreach level in 2000 2001 2002 2003
> 2004 2005{
>             su grrate3 if year<=`=`level'+2'&year>=`level', mean
>             noi di in red "Avg. Growth rate in country 3 in
> period `level' to `=`level'+2': " r(mean)
>         }
> 
> drop grrate*
> **********
> 
> Martin Weiss
> _________________________________________________________________
> 
> Diplom-Kaufmann Martin Weiss
> Mohlstrasse 36
> Room 415
> 72074 Tuebingen
> Germany
> 
> Fon: 0049-7071-2978184
> 
> Home: http://www.wiwi.uni-tuebingen.de/cms/index.php?id=1130
> 
> Publications: http://www.wiwi.uni-tuebingen.de/cms/index.php?id=1131
> 
> SSRN: http://papers.ssrn.com/sol3/cf_dev/AbsByAuth..cfm?per_id=669945
> 
> 
> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu
> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Marcello Pagano
> Sent: Tuesday, June 03, 2008 4:36 PM
> To: statalist@hsphsun2.harvard.edu
> Subject: st: Time series with moving average growth rate
> 
> *************************
> 
> Dear list members,
> 
> I have time series data (2000-2007) on crop yield for three countries. I 
> would like to calculate 3-year moving average  growth rate for each 
> country, i.e. one year increase in every subsequent period (e.g. 
> 2000-02, 2001-03,.....2005-07). My equation is log(yield) = a + b(time). 
> The growth rate is (b*100). I would like to write a loop command or any 
> other procedure which produce 3-year moving average growth rate for 
> entire period ( six values in this case) for each country. I would be 
> grateful if anyone from this list can help me in this regard. The 
> hypothetical data is given below.
> 
> 
> Year  country1  country2  country3
> 
> 2000  1.6    1.1    1.8
> 
> 2001  1.7    1.2    1.9
> 
> 2002  1.9    1.1    2.0
> 
> 2003  2.1    1.3    2.1
> 
> 2004  2.4    1.5    2.6
> 
> 2005  2.7    1.8    2.5
> 
> 2006  3.1    2.1    2.9
> 
> 2007  3.5    2.3    3.2
> 
> 
> 
> Sincerely,
> 
> Humnath Bhandari,
> 
> IRRI, Philippines
> 
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