Re: [Gretl-users] Loop question

wrote:

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&gt; 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 > > > _______________________________________________ > Gretl-users mailing list > Gretl-users(a)lists.wfu.edu > http://lists.wfu.edu/mailman/listinfo/gretl-users > -- Henrique C. de Andrade Doutorando em Economia Aplicada Universidade Federal do Rio Grande do Sul www.ufrgs.br/ppge _______________________________________________ Gretl-users mailing list Gretl-users(a)lists.wfu.edu http://lists.wfu.edu/mailman/listinfo/gretl-users