5:04 p.m.
Dear Gretl users,
I am aware that the following might be trivial, but I am stuck. Suppose that you have a
panel data set whose units are countries identified by a numerical variable, say
"ccode". And you want to split the sample into two sub-samples: OECD and
non-OECD members. I have tried the following:
genr OECD = 0
if ccode == 1
replace OECD = 1
elif ccode == 4
replace OECD = 1
(...)
end
It does not work. I am aware of the piece of warning in the Hansl's manual for Stata
users (page 32). But, does anyone know hos I should do this?
Thanks a lot in advance for your cooperation.
Cruz
5:56 p.m.
On Thu, 23 May 2019, cruz.echevarria(a)ehu.eus wrote:
Dear Gretl users,
I am aware that the following might be trivial, but I am stuck.
Suppose that you have a panel data set whose units are countries
identified by a numerical variable, say "ccode". And you want to
split the sample into two sub-samples: OECD and non-OECD members.
I have tried the following:
genr OECD = 0
if ccode == 1
replace OECD = 1
elif ccode == 4
replace OECD = 1
(...)
end
It does not work. I am aware of the piece of warning in the
Hansl's manual for Stata users (page 32). But, does anyone know
hos I should do this?
If I'm understanding the objective correctly, this is easier than
you're making it!
series OECD = ccode == 1 || ccode == 4
To the right of the first '=' we have a Boolean expression which
evaluates to 1 if the condition (in natural language, "ccode equals
1 or ccode equals 4") is true, 0 otherwise.
The alternation of "ccode == x" values can be continued, split over
more than one line using backslash if necessary.
Allin
9:08 p.m.
Hi Allin,
Thanks a million! It Works perfectly! How should I do to post a gratitude
message on the gretl-users forum so that everybody knows that you provided
the right answer? I mean, to go beyond a personal/private email message.
Regards,
Cruz
-----Mensaje original-----
De: Allin Cottrell [mailto:cottrell@wfu.edu]
Enviado el: jueves, 23 de mayo de 2019 19:57
Para: Gretl list
Asunto: [Gretl-users] Re: Dummy
On Thu, 23 May 2019, cruz.echevarria(a)ehu.eus wrote:
Dear Gretl users,
I am aware that the following might be trivial, but I am stuck.
Suppose that you have a panel data set whose units are countries
identified by a numerical variable, say "ccode". And you want to
split the sample into two sub-samples: OECD and non-OECD members.
I have tried the following:
genr OECD = 0
if ccode == 1
replace OECD = 1
elif ccode == 4
replace OECD = 1
(...)
end
It does not work. I am aware of the piece of warning in the
Hansl's manual for Stata users (page 32). But, does anyone know
hos I should do this?
If I'm understanding the objective correctly, this is easier than
you're making it!
series OECD = ccode == 1 || ccode == 4
To the right of the first '=' we have a Boolean expression which
evaluates to 1 if the condition (in natural language, "ccode equals
1 or ccode equals 4") is true, 0 otherwise.
The alternation of "ccode == x" values can be continued, split over
more than one line using backslash if necessary.
Allin
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9:26 p.m.
On Thu, 23 May 2019, Cruz A. Echevarria wrote:
Hi Allin,
Thanks a million! It Works perfectly! How should I do to post a gratitude
message on the gretl-users forum so that everybody knows that you provided
the right answer? I mean, to go beyond a personal/private email message.
It's not necessary, all messages are archived. Look here:
https://gretlml.univpm.it/hyperkitty/list/gretl-users@gretlml.univpm.it/
Besides, there's a more modular solution, that involves slightly more
elaborate syntax and uses a vector
<hansl>
matrix c = {1,4}
series OECD = 0
loop i = 1 .. nelem(c)
OECD += ccode == c[i]
endloop
</hansl>
-------------------------------------------------------
Riccardo (Jack) Lucchetti
Dipartimento di Scienze Economiche e Sociali (DiSES)
Università Politecnica delle Marche
(formerly known as Università di Ancona)
r.lucchetti(a)univpm.it
http://www2.econ.univpm.it/servizi/hpp/lucchetti
-------------------------------------------------------
1799
days inactive
1800
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4 comments
4 participants
participants (4)
-
Allin Cottrell -
Cruz A. Echevarria -
cruz.echevarria＠ehu.eus
-
Riccardo (Jack) Lucchetti