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Read More: https://www.fieldengineer.com/skills/network-field-technician
yesterday, after having taught my students the HP decomposition, I
wondered if I should also tell them that one of the greatest time-series
econometricians on Earth recently wrote a rather scathing paper entitled
"Why You Should Never Use the Hodrick-Prescott Filter", where he proposes
a simple alternative.
So this morning I rustled up a little script with Hamilton's filter. Here
function series hamcycle(series y, bool do_plot, string title[null])
h0 = 2 * $pd
h1 = h0 + 4
list PROJ = y(-h0 to -h1)
ols y 0 PROJ -q
# ht = $yhat
hc = $uhat
title = argname(y)
diff8 = y - y(-h0)
setinfo diff8 --graph-name="Random walk"
setinfo hc --graph-name="Regression"
list PLT = diff8 hc
options time-series with-lines
literal set linetype 1 lc rgb "#ff0000"
literal set linetype 2 lc rgb "#000000"
literal set key top right
printf "set title '%s'", title
end plot --output=display
setobs 4 1947:1
data gdpc1 expgsc1 pcecc96
list Y = gdpc1 expgsc1 pcecc96
LY = logs(Y)
strings Titles = strsplit("GDP Exports Consumption")
k = 1
# reproduce part of figure 6
loop foreach i LY --quiet
hc = hamcycle($i*100,,Titles[k++])
Should we turn this into a function package?
Riccardo (Jack) Lucchetti
Dipartimento di Scienze Economiche e Sociali (DiSES)
Università Politecnica delle Marche
(formerly known as Università di Ancona)
some weeks ago I've started to switch to the sublime editor
(https://www.sublimetext.com/) for writing gretl code.
Even though I like the simplicity of the gretl editor and its features
such as syntax highlighting and auto-itendation, it lacks some features
of modern IDEs such as "goto-anything", "goto-definition", custom
keybindings, fancy themes, git-implementation, snippets etc. which make
life much easier when working on larger projects. Don't get me wrong,
the gretl editor is great but was _never_ supposed to become a proper
software-development IDE but rather has another focus which is totally fine.
So I started to write the "Hansl-Gretl-Language" package for sublime
which includes the following features:
- 3 gretl build-systems (client mode, batch mode, and REPL mode) for
executing hansl code by means of sublime (plots are also working!)
- completion of gretl commands, accessors and keywords
- some snippet examples for speeding up coding
The project still has the following (known) issues:
- no auto-itendation (still have to figure out how this works)
- issues with some corner-cases which are not syntax-highlighted (regex
can become so hard!)
The package can be downloaded through sublimes package control system,
and can be found here:
If somebody wants to participate on this project, check out the code on
my github repository:
For those interesting in the sublime editor, check out "OdatNurd"'s
brilliant tutorials on youtube:
Enjoy the package,
Hello, gretl users,
It is possible to the asymmetric effects using
waldTest.gfn . When I apply the following code (from previous tags) to
apply my programme ,I got the following message:
"A function definition must have a return type and name"
function restr (matrix *b) matrix ret = b/b - b/b return matrix
ret end function open data4-10 ols 1 0 2 3 4 5 restrict rfunc = restr end
Can you any one help and suggest the code ( or) function to test the
Hello Dhanasekaran, the best way to share your code is producing a
package function with and uploading to Gretl's server. This is actually
easy, a step-by-step guide is here
Professore Ordinario di Statistica Economica
Dip. di Scienze Statistiche
"Sapienza" Università di Roma
P.le A. Moro 5 - 00185 Roma - Italia
*Il tuo 5 diventa 1000 - *Fai crescere la tua università - Dona il 5 per
mille alla Sapienza
Codice fiscale: *80209930587*
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Hi all Gretl Users,
I have written a programme for “Multidimensional
Poverty Index“ using Gretl which may be of interest for some one of us and
Gretl users. Sample data and script and its results are attached herewith.
Title : Multidimensional Poverty Index (MPI)
Author : Dhanasekaran Kuppusamy
EmailID: Dhanasekaran K<drgkdphd(a)gmail.com>
Description: Computes the Multidimensional Poverty Index developed by
Alkire and Foster (2011)
The Multidimensional Poverty Index (MPI) is a poverty measure developed by
OPHI and the United Nations Development Programme for UNDP’s flagship Human
Development Reports, and has been published in the reports since then.
the multiple deprivations that poor people face in the areas of education,
health, and living standards. This method is flexible and can be used with
different dimensions, indicators, weights and cutoffs to create measures
specific to different societies and situations.
during the last couple of days I had to use Python's popular
'statsmodels' package for estimating ARIMA type of models. Here is a
comparison with gretl's built-in apparatus for those who are interested:
To summarize: 'In terms of speed, statsmodels is no competitor at all.' ;-)
Let me add one thing: The computational heavy task is done in some
kalman-function which calls cython code which is written in C. However,
tt seems that there optimization algorithm is not well-programmed
compared to what Jack and Allin (maybe Sven?) have implemented. Well
done, guys! :-)