From henrique.coelho@gmail.com Tue May 25 01:47:34 2010
From: Henrique Andrade <henrique.coelho@gmail.com>
To: gretl-users@gretlml.univpm.it
Subject: [Gretl-users] Loop question
Date: Tue, 25 May 2010 02:47:02 -0300
Message-ID: <AANLkTimVJCvrxlNi_4zVf4CYfKvMwv0ocbJGrMkSMffI@mail.gmail.com>
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From r.lucchetti@univpm.it Tue May 25 02:08:29 2010
From: Riccardo (Jack) Lucchetti <r.lucchetti@univpm.it>
To: gretl-users@gretlml.univpm.it
Subject: Re: [Gretl-users] Loop question
Date: Tue, 25 May 2010 08:08:26 +0200
Message-ID: <alpine.DEB.2.00.1005250806090.7497@ec-4.econ.univpm.it>
In-Reply-To: AANLkTimVJCvrxlNi_4zVf4CYfKvMwv0ocbJGrMkSMffI@mail.gmail.com
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On Tue, 25 May 2010, Henrique Andrade wrote:

> Dear Gretl Community,
>=20
> I'm trying to use a loop index inside a script but I don't know how. Accord=
ing
> to "Gretl User=E2=80=99s Guide" the syntax looks like this:
>=20
> loop i=3D1..24
>=20
> But I just need the points where "i" is equal to 6, 12 and 24. Something li=
ke this:
>=20
> loop i=3D6;12;24
>=20
> How can I do that?

For example, this way:
<script>
matrix foo =3D { 6, 12, 24 }
n =3D cols(foo)
loop for i=3D1..n
     bar =3D foo[i]
     print bar
end loop
</script>


Riccardo (Jack) Lucchetti
Dipartimento di Economia
Universit=C3=A0 Politecnica delle Marche

r.lucchetti(a)univpm.it
http://www.econ.univpm.it/lucchetti

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From artur.bala@laposte.net Tue May 25 13:38:17 2010
From: artur bala <artur.bala@laposte.net>
To: gretl-users@gretlml.univpm.it
Subject: Re: [Gretl-users] Loop question
Date: Tue, 25 May 2010 18:38:10 +0100
Message-ID: <4BFC0B02.4040300@laposte.net>
In-Reply-To: alpine.DEB.2.00.1005250806090.7497@ec-4.econ.univpm.it
MIME-Version: 1.0
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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



--===============5584776725478306248==--


From henrique.coelho@gmail.com Tue May 25 15:54:26 2010
From: Henrique Andrade <henrique.coelho@gmail.com>
To: gretl-users@gretlml.univpm.it
Subject: Re: [Gretl-users] Loop question
Date: Tue, 25 May 2010 16:53:54 -0300
Message-ID: <AANLkTimdZp_ZxMXsqC9PoLGNK-O_G7N7MRwX7nBy_yIO@mail.gmail.com>
In-Reply-To: 4BFC0B02.4040300@laposte.net
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From r.lucchetti@univpm.it Tue May 25 16:42:51 2010
From: Riccardo (Jack) Lucchetti <r.lucchetti@univpm.it>
To: gretl-users@gretlml.univpm.it
Subject: Re: [Gretl-users] Loop question
Date: Tue, 25 May 2010 22:42:48 +0200
Message-ID: <alpine.DEB.2.00.1005252241540.25491@ec-4.econ.univpm.it>
In-Reply-To: AANLkTimdZp_ZxMXsqC9PoLGNK-O_G7N7MRwX7nBy_yIO@mail.gmail.com
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On Tue, 25 May 2010, Henrique Andrade wrote:

> 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?

This, maybe?

<script>
scalar m = 3
scalar base = 6
scalar x = 1
matrix vals = zeros(m,1)
loop for i=1..m --quiet
     y = base * x
     printf "Do some fun stuff with %d\n", y
     vals[i] = y
     x *= 2
endloop
print vals
</script>




Riccardo (Jack) Lucchetti
Dipartimento di Economia
Università Politecnica delle Marche

r.lucchetti(a)univpm.it
http://www.econ.univpm.it/lucchetti

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From helioxentric@gmail.com Tue May 25 16:45:45 2010
From: =?utf-8?q?H=C3=A9lio?= Guilherme <helioxentric@gmail.com>
To: gretl-users@gretlml.univpm.it
Subject: Re: [Gretl-users] Loop question
Date: Tue, 25 May 2010 21:45:43 +0100
Message-ID: <AANLkTil8oa5HrH0kyiH20w5RAmCZn7Kt0n9Vup_l10kW@mail.gmail.com>
In-Reply-To: AANLkTimdZp_ZxMXsqC9PoLGNK-O_G7N7MRwX7nBy_yIO@mail.gmail.com
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--===============2067540659501342828==--


From henrique.coelho@gmail.com Tue May 25 17:01:12 2010
From: Henrique Andrade <henrique.coelho@gmail.com>
To: gretl-users@gretlml.univpm.it
Subject: Re: [Gretl-users] Loop question
Date: Tue, 25 May 2010 18:00:41 -0300
Message-ID: <AANLkTim4NyUfNa98fyFGB-E9BJr5Ivo-JtDGc3YCmyLB@mail.gmail.com>
In-Reply-To: AANLkTil8oa5HrH0kyiH20w5RAmCZn7Kt0n9Vup_l10kW@mail.gmail.com
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--===============7739706195922641796==--


From helioxentric@gmail.com Tue May 25 19:03:21 2010
From: =?utf-8?q?H=C3=A9lio?= Guilherme <helioxentric@gmail.com>
To: gretl-users@gretlml.univpm.it
Subject: Re: [Gretl-users] Loop question
Date: Wed, 26 May 2010 00:03:18 +0100
Message-ID: <AANLkTinRCKTUiOUqIMK91huZDIuFN_c6nM4kCPdgOSwA@mail.gmail.com>
In-Reply-To: AANLkTim4NyUfNa98fyFGB-E9BJr5Ivo-JtDGc3YCmyLB@mail.gmail.com
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From cottrell@wfu.edu Wed May 26 03:23:15 2010
From: Allin Cottrell <cottrell@wfu.edu>
To: gretl-users@gretlml.univpm.it
Subject: Re: [Gretl-users] Loop question
Date: Wed, 26 May 2010 03:23:14 -0400
Message-ID: <Pine.A41.4.58.1005260311110.2470230@f1n11.sp2net.wfu.edu>
In-Reply-To: AANLkTim4NyUfNa98fyFGB-E9BJr5Ivo-JtDGc3YCmyLB@mail.gmail.com
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="===============3248136333523951876=="

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On Tue, 25 May 2010, Henrique Andrade wrote:

> 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 ;-)

The three fields in the "classic" for-loop construction are (1)
initial condition, (2) condition for continuing, and (3)
instruction to be executed each time around (after the first).

So your "n=6; n=12; n=24" cannot do what you want.

Allin

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From r.lucchetti@univpm.it Wed May 26 03:46:24 2010
From: Riccardo (Jack) Lucchetti <r.lucchetti@univpm.it>
To: gretl-users@gretlml.univpm.it
Subject: Re: [Gretl-users] Loop question
Date: Wed, 26 May 2010 09:46:22 +0200
Message-ID: <alpine.DEB.2.00.1005260944040.29134@ec-4.econ.univpm.it>
In-Reply-To: AANLkTim4NyUfNa98fyFGB-E9BJr5Ivo-JtDGc3YCmyLB@mail.gmail.com
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On Tue, 25 May 2010, Henrique Andrade 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 ;-)

We do have a construct like the one you want. Try this:

<script>
loop foreach i 6 12 24
     scalar x = $i
     printf "the square root of %g is %g\n", x, sqrt(x)
end loop
</script>

Riccardo (Jack) Lucchetti
Dipartimento di Economia
Università Politecnica delle Marche

r.lucchetti(a)univpm.it
http://www.econ.univpm.it/lucchetti

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