I disagree with your proposed syntax.
I should know that the current form of the loop for, comes from the C
language (and then C++ and Java).
I think that we could have something like:
loop n in 6 12 24 xlist
Where n is the loop variable 6, 12 and 24 are numbers, and xlist is a list
of the same type of n. This way we could have:
loop a in "G" "r" "e" "t" "l"
or
loop a in alist, where alist is a list of strings.
I am avoiding using the loop foreach, because it uses numbers to index
variables.
Is this a valuable command? The cost of developing it (and maintain), seems
too high for the value it brings.
Regards,
Hélio
On Tue, May 25, 2010 at 10:00 PM, Henrique Andrade <
henrique.coelho(a)gmail.com> wrote:
Dear Riccardo, Kehl and Guilherme,
I was looking for something simple. The option "loop for (n=6; n<=24;
n*=2)" worked just fine. But in my humble opinion the option "loop for (n=6;
n=12; n=24)" should work too, but this is not a big deal ;-)
Thank you so much!
Um abraço,
Henrique
Em 25 de maio de 2010 17:45, Hélio Guilherme <helioxentric(a)gmail.com>escreveu:
Hi Henrique,
>
> I believe that this does what you want:
> loop for (n=6; n<=24; n*=2) --quiet
>
> No other simple options.
>
>
> On Tue, May 25, 2010 at 8:53 PM, Henrique Andrade <
> henrique.coelho(a)gmail.com> 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>
>>
>> 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
>>
>> _______________________________________________
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>>
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>>
>
>
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--
Henrique C. de Andrade
Doutorando em Economia Aplicada
Universidade Federal do Rio Grande do Sul
www.ufrgs.br/ppge
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