gretl 1.7.6rc1
by Allin Cottrell
Current gretl CVS and the Windows snapshot at
http://ricardo.ecn.wfu.edu/pub/gretl/gretl_install.exe
contain release candidate 1 for gretl 1.7.6.
Please note that this version involves a backward-incompatible
change with respect to gretl 1.7.5 and earlier, affecting
user-defined functions that (a) take a named list of variables as
an argument and (b) do things with the list-member variables by
means of a "foreach" loop on the list.
I won't go into the rationale for this change here. Anyone who
wants the details may look at the proceedings on the gretl-devel
list for July, which were mostly taken up with this issue:
http://lists.wfu.edu/pipermail/gretl-devel/2008-July/thread.html
There's also a brief discussion in the chapter of the User's Guide
that deals with user-defined functions. But here's the bottom
line for users:
* If you want to "get hold of" a list-member variable in the
context noted above, you have to use the syntax listname.varname,
where listname is the name of the list in question and varname is
the name of the list member. (This is required only if you're
working with a list that was supplied as a function argument.)
Trivial example: inside a function, creating new variables which
are the cubes of the members of an original list, xlist, where
xlist is an argument to the function.
Old style:
loop foreach i xlist
$i_3 = $i^3
endloop
New style:
loop foreach i xlist
$i_3 = (xlist.$i)^3
endloop
In the new scheme, "$i" gets the name of the list-member variable
alright, but the variable is not "visible" under that name within
the function. So on the right-hand side of the expression that
creates the cubes, we need "(xlist.$i)^3". (Well, actually the
parentheses are not required, but wearing your seatbelt is in
general a good idea.)
Although this may affect quite a large number of existing
functions, we believe the effects are localized and the update
should be trivial. If anyone has a function for which the update
is _not_ trivial, please let us know.
Allin Cottrell.
13 years, 9 months
inconsistency in PCA function
by Rebecca Zhang
Hi,
I got inconsistent results when running PCA using covariance matrix in gretl. Please see attached TSY_curve file for the data used. Please see attached PCA_problem file that illustrated the problem when verified with R.
The result highlighted in yellow is different from R result and appears in consistent with a reduced components result. I appreciate if you can look into it. Thank you.
Regards,
Rebecca
14 years, 1 month
AYUDA CON LOS PROGRAMAS REQUERIDOS ANTES DE COMPILAR GRETL
by Hebert Suarez Cahuana
Consigo instalar gretl 1.8.2 a traves de ./configure make make check
su:****** make install luego de instalar todos los programas que el
manual sugiere que se deben instalar antes de compilar, con el
siguiente comando:
sudo aptitude install gcc autoconf automake1.9 libtool flex bison
gcc-doc libc6-dev libc-dev libgfortran1 libgfortran1-dev gettext
pkgconfig libglib2.0-dev libgtk2.0-dev libpng12-dev libxslt1-dev
lapack3-dev fftw3-dev libreadline5-dev libgmp3-dev
He probado con sudo apt-get install pero no funciona, por eso opte por
el sudo aptitude install ....
Y logro compilar gretl sin problemas, el punto es que desactualiza mi
sistema y el gestor de actualizciones me pide que realice una
actualización parcial, cuando realizo la actualización parcial
desinstala el gretl y muchos de los programas anteriores, es decir el
costo de tener gretl 1.8.2 o la última version, es tener desactualizado
mi sistema, una opción no muy deseable por supuesto. utilizo ubuntu 9.04.
¿Alguien ha tenido tambien este problema?
Saludos cordiales
Hebert Suarez Cahuana
Peru
--
Atentamente:
Hebert Suárez Cahuana
Secretario Académico
Escuela Profesional de Economía
Universidad Nacional de San Agustín
Av. Venezuela S/N Cercado
Arequipa-Peru
14 years, 12 months
COMO ENUMERAR ECUACIONES CON GRETL
by Hebert Suarez Cahuana
Estimados señores:
Utilizo Gretl para presentar mis resultados en Kile-latex, pero al
momento de pasar el código de latex de Gretl de una regresión al kile,
me gustaría que se enumere, como lo hace \begin{equation}
....\end{equation}, y que la enumeración sea la que le corresponda
segun las ecuaciones anteriores que tenga. ¿Cómo se puede hacer esto en
Kile? ¿Cómo debo modificar el codigo de Latex?
Saludos cordiales
Hebert Suarez Cahuana
Peru
14 years, 12 months
(sin asunto)
by Hebert Suarez Cahuana
Mi pregunta era trivial, bastaba con quitar un /notag.
Saludos
Hebert
--
Atentamente:
Hebert Suárez Cahuana
Secretario Académico
Escuela Profesional de Economía
Universidad Nacional de San Agustín
Av. Venezuela S/N Cercado
Arequipa-Peru
http://www.hebertsuarezc.blogspot.com
E-mail: hsuarezc(a)unsa.edu.pe
14 years, 12 months
gnuplot eps output
by Talha Yalta
When I save a gnuplot graph as eps, the accented Turkish charcters are
omitted. Png files are OK. I am not sure if this is something to do
with my new system or the gretl mixed language error from last week.
When I enter gnuplot, I get:
G N U P L O T
Version 4.2 patchlevel 5
last modified Mar 2009
System: Linux 2.6.30.1-123
Cheers
Talha
--
“Remember not only to say the right thing in the right place, but far
more difficult still, to leave unsaid the wrong thing at the tempting
moment.” - Benjamin Franklin (1706-1790)
--
14 years, 12 months
fixed effects panel estimation
by Iveta Paterova
Hello everybody,
it may sound silly, but I simply cannot understand why when calculating
fixed effects panel estimation, some variables are "omitted due to the
collinearity" and the constant remains. Should not also constant disappear
from the estimation - as it bears the fixed effects???
I am calculating log-gravity models and the important variables are
omitted. What do I do wrong?
How can I get know the coefficient of omitted variables? IT IS IMPROTANT
FOR MY ESTIMATION?
Thank you for your help.
Iveta
15 years
ARIMA Forecasting question
by Ravi Mulani
Hi,
I am using the forecasting feature for ARIMA (using the icon view, as
opposed to programming). Is there any way for me to forecast farther into
the future than the lags of independent variables? For example, can I
forecast GDP 3 quarters into the future using a 1-quarter lagged imports
variable? It seems to me that the dynamic forecast only works for the lagged
dependent variable (AR __), but not the independent variable, unless I am
doing something wrong.
Thanks,
Ravi
--
Ravi Mulani -- rmulani(a)fas.harvard.edu -- 2015 Harvard Yard Mail Center
Cambridge 02138 --
15 years
