Dear Henrique,
you have to simply follow the syntax. Take a look at Chapter 9 in the User's
Guide (Help/User's guide in the menu). Simple example on page 60 will help!
Best wishes
Daniel
-----Original Message-----
From: Henrique Andrade <henrique.coelho(a)gmail.com>
To: Gretl list <gretl-users(a)lists.wfu.edu>
List-Post: gretl-users@gretlml.univpm.it
Date: Tue, 25 May 2010 16:53:54 -0300
Subject: Re: [Gretl-users] Loop question
Dear Riccardo, Kehl and Artur,
Thanks a lot for your help! I'd tried all the options you gave me and
my final script looks like this:
<script>
scalar n=0
loop for (n=6;n<=24;n=n*2) --quiet
scalar m = $T - n + 1
loop j=2..nelemY --quiet
matrix R$n_$j = zeros(m,1)
loop i=1..m --quiet
loop c=1..n --quiet
row = i + n - c
R$n_$j[i] += r$j[row, c]
endloop
endloop
endloop
matrix mci$n = R$n_2 + R$n_3
endloop
</script>
Now, because I just need the values for 6, 12 and 24, I'm trying to
substitute the second line "loop for (n=6;n<=24;n=n*2)" for this:
loop for (n=6;n=12;n=24)
But the script isn't working. Any hints?
Best regards,
Henrique
2010/5/25 artur bala <artur.bala(a)laposte.net>
> Or, if your index is something like of a geometric series as it seems to
> be (let's say 6, 12, 24, 48, and so on) and too long to do manually
> you can try this one:
> <script>
> scalar count=0
> loop for (count=6;count<=24;count=count*2) --quiet
> <instructions>
> endloop
> <\script>
>
> cheers,
> artur
>
> Riccardo (Jack) Lucchetti a écrit :
> > On Tue, 25 May 2010, Henrique Andrade wrote:
> >
> >> Dear Gretl Community,
> >>
> >> I'm trying to use a loop index inside a script but I don't know how.
> >> According
> >> to "Gretl User’s Guide" the syntax looks like this:
> >>
> >> loop i=1..24
> >>
> >> But I just need the points where "i" is equal to 6, 12 and 24.
> >> Something like this:
> >>
> >> loop i=6;12;24
> >>
> >> How can I do that?
> >
> > For example, this way:
> > <script>
> > matrix foo = { 6, 12, 24 }
> > n = cols(foo)
> > loop for i=1..n
> > bar = foo[i]
> > print bar
> > end loop
> > </script>
> >
> >
> > Riccardo (Jack) Lucchetti
> > Dipartimento di Economia
> > Università Politecnica delle Marche
> >
> > r.lucchetti(a)univpm.it
> > http://www.econ.univpm.it/lucchetti
> > ------------------------------------------------------------------------
> >
> > _______________________________________________
> > Gretl-users mailing list
> > Gretl-users(a)lists.wfu.edu
> > http://lists.wfu.edu/mailman/listinfo/gretl-users
>
>
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>
--
Henrique C. de Andrade
Doutorando em Economia Aplicada
Universidade Federal do Rio Grande do Sul
www.ufrgs.br/ppge
