8:32 a.m.
It is not easy to enter or import date to Gretl system. The only way to
enter date is through time series function. It is a weak side in Gretl. It
should be a function of enter any date to the system. Any statistic software
has function to create date variables as well as create character variables.
Collecting data is depends on measuring observations time. It is not
difficult to add creating date function as well as creating character
variables.
Thanks
Nabil Brandl
http://nabilnabil.homestead.com <http://nabilnabil.homestead.com/>
8:48 a.m.
If time series would be a weak side then the program should be called grel instead but
it's gretl!
One can enter dates as labels/markers for the whole data set or one splits dates up and
creates several series as part of the data set.
Pindar
06.01.2013 09:32 "Nabil Brandl" <nabilbrandl(a)gmail.com>:
It is not easy to enter or import date to Gretl system. The only way
to enter date is through time series function. It is a weak side in Gretl. It should be a
function of enter any date to the system. Any statistic software has function to create
date variables as well as create character variables.
Collecting data is depends on measuring observations time. It is not difficult to add
creating date function as well as creating character variables.
Thanks
Nabil Brandl
http://nabilnabil.homestead.com
_______________________________________________
Gretl-users mailing list
Gretl-users(a)lists.wfu.edu
http://lists.wfu.edu/mailman/listinfo/gretl-users
8:55 a.m.
If time series were a weak side (n'est-ce pas ;-))
then the program should be called grel instead but it's gretl!
One can enter dates as labels/markers for the whole data set or one splits dates up and
creates several series as part of the data set.
Pindar
06.01.2013 09:32 "Nabil Brandl" <nabilbrandl(a)gmail.com>:
> It is not easy to enter or import date to Gretl system. The only way to enter date is
through time series function. It is a weak side in Gretl. It should be a function of enter
any date to the system. Any statistic software has function to create date variables as
well as create character variables.
> Collecting data is depends on measuring observations time. It is not difficult to add
creating date function as well as creating character variables.
>
> Thanks
>
> Nabil Brandl
> http://nabilnabil.homestead.com
>
>
>
> _______________________________________________
> Gretl-users mailing list
> Gretl-users(a)lists.wfu.edu
> http://lists.wfu.edu/mailman/listinfo/gretl-users
10:42 a.m.
On Sun, 6 Jan 2013, Nabil Brandl wrote:
It is not easy to enter or import date to Gretl system. The only way
to
enter date is through time series function. It is a weak side in Gretl.
I'm not sure what you mean here. In importing time series data,
gretl will typically pick up date information provided it is given
in a consistent and reasonably standard form, in the first column of
the imported data.
If dates cannot be read in this way, they can be easily imposed
using the "setobs" command. The two functions obsnum() and
obslabel() can be used to move between a 1-based index of the
observations and strings representing dates, such as "2012:01".
And individual observations in a series can be picked out by date if
required, as in
scalar CPI_1980_1 = CPI[1980:1]
Allin Cottrell
1:53 a.m.
New subject: Nonlinear panel Instrumental Variable Regression with GRETL
Hi All,
Please I need help for the concern on the subject of this mail.
Cheers,
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________________________________
From: Allin Cottrell <cottrell(a)wfu.edu>
To: Gretl list <gretl-users(a)lists.wfu.edu>
Sent: Sunday, January 6, 2013 11:42 AM
Subject: Re: [Gretl-users] Enter date to gretl system
On Sun, 6 Jan 2013, Nabil Brandl wrote:
It is not easy to enter or import date to Gretl system. The only way
to
enter date is through time series function. It is a weak side in Gretl.
I'm not sure what you mean here. In importing time series data,
gretl will typically pick up date information provided it is given
in a consistent and reasonably standard form, in the first column of
the imported data.
If dates cannot be read in this way, they can be easily imposed
using the "setobs" command. The two functions obsnum() and
obslabel() can be used to move between a 1-based index of the
observations and strings representing dates, such as "2012:01".
And individual observations in a series can be picked out by date if
required, as in
scalar CPI_1980_1 = CPI[1980:1]
Allin Cottrell
_______________________________________________
Gretl-users mailing list
Gretl-users(a)lists.wfu.edu
http://lists.wfu.edu/mailman/listinfo/gretl-users
7:21 a.m.
New subject: Nonlinear panel Instrumental Variable Regression with GRETL
On Thu, 10 Jan 2013, Anutechia Asongu wrote:
Hi All,
Please I need help for the concern on the subject of this mail.
Cheers,
I must admit, this isn't particulalrly clear. Am I correct in thinking
that you need to estimate a model like (I have to use LaTeX, sorry)
\[
y_{i,t} = g(X_{i,t}, \theta) + \alpha_i + \epsilon_{i,t}
\]
where
\[
E( g(X_{i,t}, \theta) \cdot \epsilon_{i,t} ) \ne 0
\]
but you have instruments such that
\[
E(\epsilon_{i,t} | Z_{i,t}) \ne 0 ?
\]?
And if so, how do you want to treat the individual effect $\alpha_i$?
Fixed? Random?
-------------------------------------------------------
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
-------------------------------------------------------
6:21 p.m.
New subject: Nonlinear panel Instrumental Variable Regression with GRETL
Jack's mail with LaTeX output - easier to read :-)
11.01.2013 08:21, Riccardo (Jack) Lucchetti:
On Thu, 10 Jan 2013, Anutechia Asongu wrote:
> Hi All,
> Please I need help for the concern on the subject of this
> mail.
> Cheers,
I must admit, this isn't particulalrly clear. Am I correct in thinking
that you need to estimate a model like:
$y_{i,t} = g(X_{i,t}, \theta) + \alpha_i + \epsilon_{i,t}$
where
$E( g(X_{i,t}, \theta) \cdot \epsilon_{i,t} ) \ne 0$
but you have instruments such that
$E(\epsilon_{i,t} | Z_{i,t}) \ne 0$
And if so, how do you want to treat the individual effect $\alpha_i$?
Fixed? Random?
-------------------------------------------------------
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
-------------------------------------------------------
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6 comments
5 participants
participants (5)
-
Allin Cottrell -
Anutechia Asongu -
Nabil Brandl -
Pindar -
Riccardo (Jack) Lucchetti