GretlWiki - User contributions [en]

Blog

2025-01-30T23:27:00Z

DeFeroci: New 2024b

New features, fixed bugs, and software news are shown here

A good concise list is provided in the official [https://gretl.sourceforge.net/ChangeLog.html changelog], here the aim is to be more explicit and sometimes give some examples. Before the respective new gretl version is released, the examples will only work in snapshots that are recent enough, or with self-compiled bleeding-edge versions.

=== New in what will be gretl 2024b ===

==== gridplot title ====
You can add a title to a gridplot now.
<pre>
open bikesharing
gpbuild bikers
gnuplot temp --time-series
gnuplot casual --time-series
end gpbuild

gridplot bikers --title="Cool bikers" --output=display
</pre>

==== Dynamic scaling of fonts in many gretl windows ====

You can enlarge or shrink the font size very much like in a web browser, for example using ctrl_+ or ctrl_- keys.

==== Gamma distribution in distribution plotting tools ====

he distribution plotting tool (under the Tools menu) now also supports the Gamma distribution.

==== Panel dataset subsampling ====

If you're subsampling a panel dataset with the graphical dialogs, telling gretl to maintain the panel structure is now easier.

=== New in what will be gretl 2024a ===
(as always, just a selection)

==== more flexible ''info'' command ====

Not a huge new feature, but the ''info'' command now offers a scripting way to editing the meta data of a dataset. The GUI analog (which has always been possible) is to go to Data / Dataset info.

The relevant new options are ''--to-file'' and ''--from-file''.

==== matrix and time-series in ''gnuplot'' command ====
''gnuplot'' command with --matrix and --time-series options show
dataset time on x-axis if possible.

<pre>
open denmark
m = {LRM}
gnuplot --matrix=m --time-series --with-lines --output=display
</pre>

And also related to time series plots with matrices, you can now do:

<pre>
open denmark
m = {dataset}
tsplots --matrix=m --output=display
</pre>

===New in gretl 2023c===
(this is just a selection, not exhaustive)

====''gridplot'' command====
This new native command makes it possible to arrange several subplots in a grid (rectangular) layout. As such it will pretty much replace the contributed function package ''multiplot''. There are basically two ways of using it:

First, using some other plotting commands, redirect the output to a string buffer inside a strings array. Then execute the gridplot command on that array. Example:

<pre>
open australia
strings temparr = array(2)
qqplot IAU --outbuf=temparr[1]
kdplot E --outbuf=temparr[2]
gridplot temparr --output=display
</pre>

Secondly, use the companion command ''gpbuild'' in a block format, and then define the individual parts:

<pre>
open data4-10
gpbuild MyPlots
gnuplot ENROLL CATHOL
gnuplot ENROLL INCOME
gnuplot ENROLL COLLEGE
end gpbuild
gridplot MyPlots --output=display
</pre>

====''tsplots'' (virtual) command====
You can now use the new ''tsplots'' command to create several joint time-series plots easily. Example:

<pre>
open denmark
tsplots LRM LRY --output=display
</pre>

This has actually "always" been possible with the ''scatters'' command --and was duly documented-- but it was somewhat counterintuitive to use a command for scatter plots to draw time-series lines.

====plot multiple bands====
Plotting a single band to represent a confidence area or something similar has been possible for a long long time. Now you can also insert more than one band into a plot. The syntax relies on specifying a hansl bundle for each band and then passing all of them inside an array of bundles to the gnuplot call. Meaningless example:

<pre>
# create artificial data
nulldata 50
setobs 1 1 --time-series
series y = log(time) # main line to be plotted
series w = normal() # example width series
series x1 = y + 0.1 # optional center different from y
series x2 = y - 0.1 # ditto

# specify the band specs
bundle b1 = _(center="x1", width="w", style="bars")
bundle b2 = _(center="x2", width="w", factor=0.2, style="fill", color="grey")
bundles bandspecs = defarray(b1,b2)

# execute the plot
gnuplot y --time-series --with-lines --output=display --bands=bandspecs
</pre>

====cluster-robust standard errors generalized for panel models====
For the ''panel'' command, the ''--robust'' option has always given you robust standard errors in the sense that clustering by panel units (groups, whatever you want to call them) is done by gretl. Several generalizations are now possible with the ''--cluster'' option; see also ch. 22 of the user guide.

*clustering by time period, example:
<pre>
open abdata
panel WAGE const INDOUTPT --cluster=$time
</pre>

*clustering by a user-defined variable, example:
<pre>
open abdata
panel WAGE const INDOUTPT --cluster=IND
</pre>

* two-way clustering, example:
<pre>
open abdata
panel WAGE const INDOUTPT --cluster=$time,IND
</pre>
(If you want to combine clustering by panel units/groups with another variable, you can use the keyword <code>$unit</code> just like <code>$time</code>.)

Please also check out the ''--no-df-corr'' option if you want to compare results with other software.

*Driscoll-Kraay robust standard errors, example:
<pre>
open abdata
set panel_robust scc # scc: spatial-correlation consistent
panel WAGE const INDOUTPT --robust
</pre>
Driscoll-Kraay standard errors have also been available in the contributed package ''CSDpanel'', now they are natively implemented. This is not the same as two-way clustering, but they are related. This is also available in the GUI by selecting the corresponding SCC option for the robust variance estimation. For scripting, the ''hac_lag'' setting is also relevant. See section 22.4. of the guide.

====panel data handling: convert side-by-side time series in the GUI====
This is not so easy to explain, but suppose you have a variable 'GDP' as several time series for several countries, say for France and the US. Then you want to convert this from a time-series dataset to a panel dataset with a single series spanning the two units (countries). This has always been possible with scripting, see section 4.5 of the user guide. Now you can also do it in the menu GUI interface.
[[File:Panel dataset structure dialog.png|left|thumb]]

====dark theme on Windows and MacOS====
An experimental dark theme option is now available on non-Linux systems.

Blog

2025-01-30T23:21:11Z

DeFeroci:

New features, fixed bugs, and software news are shown here

A good concise list is provided in the official [https://gretl.sourceforge.net/ChangeLog.html changelog], here the aim is to be more explicit and sometimes give some examples. Before the respective new gretl version is released, the examples will only work in snapshots that are recent enough, or with self-compiled bleeding-edge versions.

=== New in what will be gretl 2024a ===
(as always, just a selection)

==== more flexible ''info'' command ====

Not a huge new feature, but the ''info'' command now offers a scripting way to editing the meta data of a dataset. The GUI analog (which has always been possible) is to go to Data / Dataset info.

The relevant new options are ''--to-file'' and ''--from-file''.

==== matrix and time-series in ''gnuplot'' command ====
''gnuplot'' command with --matrix and --time-series options show
dataset time on x-axis if possible.

<pre>
open denmark
m = {LRM}
gnuplot --matrix=m --time-series --with-lines --output=display
</pre>

And also related to time series plots with matrices, you can now do:

<pre>
open denmark
m = {dataset}
tsplots --matrix=m --output=display
</pre>

===New in gretl 2023c===
(this is just a selection, not exhaustive)

====''gridplot'' command====
This new native command makes it possible to arrange several subplots in a grid (rectangular) layout. As such it will pretty much replace the contributed function package ''multiplot''. There are basically two ways of using it:

First, using some other plotting commands, redirect the output to a string buffer inside a strings array. Then execute the gridplot command on that array. Example:

<pre>
open australia
strings temparr = array(2)
qqplot IAU --outbuf=temparr[1]
kdplot E --outbuf=temparr[2]
gridplot temparr --output=display
</pre>

Secondly, use the companion command ''gpbuild'' in a block format, and then define the individual parts:

<pre>
open data4-10
gpbuild MyPlots
gnuplot ENROLL CATHOL
gnuplot ENROLL INCOME
gnuplot ENROLL COLLEGE
end gpbuild
gridplot MyPlots --output=display
</pre>

====''tsplots'' (virtual) command====
You can now use the new ''tsplots'' command to create several joint time-series plots easily. Example:

<pre>
open denmark
tsplots LRM LRY --output=display
</pre>

This has actually "always" been possible with the ''scatters'' command --and was duly documented-- but it was somewhat counterintuitive to use a command for scatter plots to draw time-series lines.

====plot multiple bands====
Plotting a single band to represent a confidence area or something similar has been possible for a long long time. Now you can also insert more than one band into a plot. The syntax relies on specifying a hansl bundle for each band and then passing all of them inside an array of bundles to the gnuplot call. Meaningless example:

<pre>
# create artificial data
nulldata 50
setobs 1 1 --time-series
series y = log(time) # main line to be plotted
series w = normal() # example width series
series x1 = y + 0.1 # optional center different from y
series x2 = y - 0.1 # ditto

# specify the band specs
bundle b1 = _(center="x1", width="w", style="bars")
bundle b2 = _(center="x2", width="w", factor=0.2, style="fill", color="grey")
bundles bandspecs = defarray(b1,b2)

# execute the plot
gnuplot y --time-series --with-lines --output=display --bands=bandspecs
</pre>

====cluster-robust standard errors generalized for panel models====
For the ''panel'' command, the ''--robust'' option has always given you robust standard errors in the sense that clustering by panel units (groups, whatever you want to call them) is done by gretl. Several generalizations are now possible with the ''--cluster'' option; see also ch. 22 of the user guide.

*clustering by time period, example:
<pre>
open abdata
panel WAGE const INDOUTPT --cluster=$time
</pre>

*clustering by a user-defined variable, example:
<pre>
open abdata
panel WAGE const INDOUTPT --cluster=IND
</pre>

* two-way clustering, example:
<pre>
open abdata
panel WAGE const INDOUTPT --cluster=$time,IND
</pre>
(If you want to combine clustering by panel units/groups with another variable, you can use the keyword <code>$unit</code> just like <code>$time</code>.)

Please also check out the ''--no-df-corr'' option if you want to compare results with other software.

*Driscoll-Kraay robust standard errors, example:
<pre>
open abdata
set panel_robust scc # scc: spatial-correlation consistent
panel WAGE const INDOUTPT --robust
</pre>
Driscoll-Kraay standard errors have also been available in the contributed package ''CSDpanel'', now they are natively implemented. This is not the same as two-way clustering, but they are related. This is also available in the GUI by selecting the corresponding SCC option for the robust variance estimation. For scripting, the ''hac_lag'' setting is also relevant. See section 22.4. of the guide.

====panel data handling: convert side-by-side time series in the GUI====
This is not so easy to explain, but suppose you have a variable 'GDP' as several time series for several countries, say for France and the US. Then you want to convert this from a time-series dataset to a panel dataset with a single series spanning the two units (countries). This has always been possible with scripting, see section 4.5 of the user guide. Now you can also do it in the menu GUI interface.
[[File:Panel dataset structure dialog.png|left|thumb]]

====dark theme on Windows and MacOS====
An experimental dark theme option is now available on non-Linux systems.

Blog

2025-01-30T23:20:15Z

DeFeroci: /* New in what will be gretl 2024a */

New features, fixed bugs, and software news are shown here

A good concise list is provided in the official [https://gretl.sourceforge.net/ChangeLog.html changelog], here the aim is to be more explicit and sometimes give some examples. Before the respective new gretl version is released, the examples will only work in snapshots that are recent enough, or with self-compiled bleeding-edge versions.

=== New in what will be gretl 2024a ===
(as always, just a selection)

==== more flexible ''info'' command ====

Not a huge new feature, but the ''info'' command now offers a scripting way to editing the meta data of a dataset. The GUI analog (which has always been possible) is to go to Data / Dataset info.

The relevant new options are ''--to-file'' and ''--from-file''.

=== matrix and time-series in ''gnuplot'' command ===
''gnuplot'' command with --matrix and --time-series options show
dataset time on x-axis if possible.

<pre>
open denmark
m = {LRM}
gnuplot --matrix=m --time-series --with-lines --output=display
</pre>

And also related to time series plots with matrices, you can now do:

<pre>
open denmark
m = {dataset}
tsplots --matrix=m --output=display
</pre>

===New in gretl 2023c===
(this is just a selection, not exhaustive)

====''gridplot'' command====
This new native command makes it possible to arrange several subplots in a grid (rectangular) layout. As such it will pretty much replace the contributed function package ''multiplot''. There are basically two ways of using it:

First, using some other plotting commands, redirect the output to a string buffer inside a strings array. Then execute the gridplot command on that array. Example:

<pre>
open australia
strings temparr = array(2)
qqplot IAU --outbuf=temparr[1]
kdplot E --outbuf=temparr[2]
gridplot temparr --output=display
</pre>

Secondly, use the companion command ''gpbuild'' in a block format, and then define the individual parts:

<pre>
open data4-10
gpbuild MyPlots
gnuplot ENROLL CATHOL
gnuplot ENROLL INCOME
gnuplot ENROLL COLLEGE
end gpbuild
gridplot MyPlots --output=display
</pre>

====''tsplots'' (virtual) command====
You can now use the new ''tsplots'' command to create several joint time-series plots easily. Example:

<pre>
open denmark
tsplots LRM LRY --output=display
</pre>

This has actually "always" been possible with the ''scatters'' command --and was duly documented-- but it was somewhat counterintuitive to use a command for scatter plots to draw time-series lines.

====plot multiple bands====
Plotting a single band to represent a confidence area or something similar has been possible for a long long time. Now you can also insert more than one band into a plot. The syntax relies on specifying a hansl bundle for each band and then passing all of them inside an array of bundles to the gnuplot call. Meaningless example:

<pre>
# create artificial data
nulldata 50
setobs 1 1 --time-series
series y = log(time) # main line to be plotted
series w = normal() # example width series
series x1 = y + 0.1 # optional center different from y
series x2 = y - 0.1 # ditto

# specify the band specs
bundle b1 = _(center="x1", width="w", style="bars")
bundle b2 = _(center="x2", width="w", factor=0.2, style="fill", color="grey")
bundles bandspecs = defarray(b1,b2)

# execute the plot
gnuplot y --time-series --with-lines --output=display --bands=bandspecs
</pre>

====cluster-robust standard errors generalized for panel models====
For the ''panel'' command, the ''--robust'' option has always given you robust standard errors in the sense that clustering by panel units (groups, whatever you want to call them) is done by gretl. Several generalizations are now possible with the ''--cluster'' option; see also ch. 22 of the user guide.

*clustering by time period, example:
<pre>
open abdata
panel WAGE const INDOUTPT --cluster=$time
</pre>

*clustering by a user-defined variable, example:
<pre>
open abdata
panel WAGE const INDOUTPT --cluster=IND
</pre>

* two-way clustering, example:
<pre>
open abdata
panel WAGE const INDOUTPT --cluster=$time,IND
</pre>
(If you want to combine clustering by panel units/groups with another variable, you can use the keyword <code>$unit</code> just like <code>$time</code>.)

Please also check out the ''--no-df-corr'' option if you want to compare results with other software.

*Driscoll-Kraay robust standard errors, example:
<pre>
open abdata
set panel_robust scc # scc: spatial-correlation consistent
panel WAGE const INDOUTPT --robust
</pre>
Driscoll-Kraay standard errors have also been available in the contributed package ''CSDpanel'', now they are natively implemented. This is not the same as two-way clustering, but they are related. This is also available in the GUI by selecting the corresponding SCC option for the robust variance estimation. For scripting, the ''hac_lag'' setting is also relevant. See section 22.4. of the guide.

====panel data handling: convert side-by-side time series in the GUI====
This is not so easy to explain, but suppose you have a variable 'GDP' as several time series for several countries, say for France and the US. Then you want to convert this from a time-series dataset to a panel dataset with a single series spanning the two units (countries). This has always been possible with scripting, see section 4.5 of the user guide. Now you can also do it in the menu GUI interface.
[[File:Panel dataset structure dialog.png|left|thumb]]

====dark theme on Windows and MacOS====
An experimental dark theme option is now available on non-Linux systems.

SQLite

2024-08-10T00:38:15Z

DeFeroci: fixed environment variable

[https://www.sqlite.org/ SQLite] is a lightweight, serverless database engine often used for small-scale applications and embedded systems.
==Setup==
===GNU/Linux===
To connect to the database Gretl uses the [https://en.wikipedia.org/wiki/Open_Database_Connectivity ODBC] driver . The process for setting it up is described by Andrew B. Collier in an [https://datawookie.dev/blog/2015/09/setting-up-odbc-for-sqlite-on-ubuntu/ article on his blog]. The article describes how to set it up on a computer running Ubuntu but it also works for other distributions.

====Packages download====
You need to download and install the [https://www.unixodbc.org/odbcinst.html unixODBC] and [http://ch-werner.de/sqliteodbc/html/index.html SQLiteODBC] packages depending on the distribution you use.

====Setup files====
If it is not already present you need to create an odbcinst.ini file in the <code>/etc</code> folder as shown below

<pre>
; /etc/odbcinst.ini file content

[SQLite]
Description=SQLite ODBC Driver
Driver=libsqliteodbc.so
Setup=libsqliteodbc.so
UsageCount=1

[SQLite3]
Description=SQLite3 ODBC Driver
Driver=libsqlite3odbc.so
Setup=libsqlite3odbc.so
UsageCount=1
</pre>

and an <code>.odbc.ini</code> file in the home directory that specifies the name and path to the database file.

<pre>
; ~/.odbc.ini file content

[databaseFileName]
Description = Database description
Driver = SQLite3
Database = /path/to/database/file
Timeout = 2000
</pre>

As a final step, you need to create an environment variable that points to the <code>/etc</code> folder.
In the example, a global environment variable is created by adding a line to the <code>/etc/environment</code> file.
<pre>
#
# Content of /etc/environment
#

ODBCSYSINI=/etc
</pre>

====Connecting via Gretl====
Once everything is set up to create a connection via Gretl and be able to retrieve data, simply use the <code>open</code> command with the <code>--odbc</code> flag specifying the database name given in the <code>.odbc.ini</code> file.
<pre>
open dsn=databaseFileName --odbc
</pre>

At this point you can use the <code>open</code> and <code>data</code> commands as specified in the command reference.

SQLite

2024-08-10T00:36:01Z

DeFeroci: Page created

[https://www.sqlite.org/ SQLite] is a lightweight, serverless database engine often used for small-scale applications and embedded systems.
==Setup==
===GNU/Linux===
To connect to the database Gretl uses the [https://en.wikipedia.org/wiki/Open_Database_Connectivity ODBC] driver . The process for setting it up is described by Andrew B. Collier in an [https://datawookie.dev/blog/2015/09/setting-up-odbc-for-sqlite-on-ubuntu/ article on his blog]. The article describes how to set it up on a computer running Ubuntu but it also works for other distributions.

====Packages download====
You need to download and install the [https://www.unixodbc.org/odbcinst.html unixODBC] and [http://ch-werner.de/sqliteodbc/html/index.html SQLiteODBC] packages depending on the distribution you use.

====Setup files====
If it is not already present you need to create an odbcinst.ini file in the <code>/etc</code> folder as shown below

<pre>
; /etc/odbcinst.ini file content

[SQLite]
Description=SQLite ODBC Driver
Driver=libsqliteodbc.so
Setup=libsqliteodbc.so
UsageCount=1

[SQLite3]
Description=SQLite3 ODBC Driver
Driver=libsqlite3odbc.so
Setup=libsqlite3odbc.so
UsageCount=1
</pre>

and an <code>.odbc.ini</code> file in the home directory that specifies the name and path to the database file.

<pre>
; ~/.odbc.ini file content

[databaseFileName]
Description = Database description
Driver = SQLite3
Database = /path/to/database/file
Timeout = 2000
</pre>

As a final step, you need to create an environment variable that points to the .ini file.
In the example, a global environment variable is created by adding a line to the <code>/etc/environment</code> file.
<pre>
#
# Content of /etc/environment
#

ODBCSYSINI=/etc
</pre>

====Connecting via Gretl====
Once everything is set up to create a connection via Gretl and be able to retrieve data, simply use the <code>open</code> command with the <code>--odbc</code> flag specifying the database name given in the <code>.odbc.ini</code> file.
<pre>
open dsn=databaseFileName --odbc
</pre>

At this point you can use the <code>open</code> and <code>data</code> commands as specified in the command reference.

Resources

2024-02-21T00:12:18Z

DeFeroci: Add cheat sheet

Useful links:

* [https://gretl.sourceforge.net/ Gretl page on sourceforge]
* Download gretl:
** [https://gretl.sourceforge.net/win32/ For Windows]
** [https://gretl.sourceforge.net/osx.html For macOS]
** [https://gretl.sourceforge.net/#dl Source package]
** [https://sourceforge.net/projects/gretl/files/snapshots/ Current snapshot]
* [http://sourceforge.net/projects/gretl/files/manual/ Manual and learning resources]
* [https://gretl.sourceforge.net/cgi-bin/gretldata.cgi?opt=SHOW_FUNCS Gretl function packages]
* [https://gretlml.univpm.it/postorius/lists/ Gretl mailing list]
* [https://www.youtube.com/channel/UCM-s19lycOv9ZKX1K_KROIA/featured%7C Gretl Team YouTube channel]
* [https://github.com/gretl-project Gretl project on GitHub]
* [https://github.com/gretl-project/material-on-gretl/wiki Parallel wiki on GitHub]

Cheat sheets:
*https://github.com/gretl-project/gretl_cheatsheet/blob/master/datahandling.pdf

Social:
* https://econtwitter.net/@gretl
* https://twitter.com/gretl_stats

Other projects:

* [http://www.gnu.org/ Free Software Foundation]
* [http://www.gnu.org/ Gnuplot]

Gretlwiki café

2024-02-21T00:07:41Z

DeFeroci: Change month

This page is designed as a meeting and discussion place where we can talk about gretl and how to improve the wiki.

You can start a discussion adding to this page
<pre>
=== DiscussionTitle ~~~~ ===
Text
</pre>

And comment with
<pre>
:comment text ~~~~
</pre>
== February 2023 discussions ==

Wiki

2024-01-29T18:18:28Z

DeFeroci: Chenge of registration procedure

Here you can find some useful information on using the wiki.

==Contribute==
Contributions are welcome, but only registered users can make changes.

If you are new to MediaWiki consult the [[mediawikiwiki:Help:Contents|User's Guide]].

==Registration==
It is not possible to self-register.

To apply to be registered write at gretlwiki[at]deferoci[dot]mozmail[dot]com

The mail must contain:

*A valid username (start with capital letter and available) under which you want to be registered.
*Whether or not you want to be registered by the e-mail you write from.
*Some generic information of yours to make sure you are part of the gretl community.

==Changing Password==
To modify your password go to ''Preferences'' (upper right) -> ''User profile'' -> ''Password'' -> ''Change password''

Enter the new password and then click "Change password" button.

If administrators have created your account manually remember to change it!

==Admins Section==

===Add user===
To add a user:

#go to [[Special:CreateAccount]]
#Enter the username the user has chosen.
##If you want create the account manually enter a sufficiently secure temporary password.
##Otherwise check the "Use a temporary random password and send it to the specified email address" checkbox and enter new user's email.
#Click "Create Account" button.
#After that a page with "Account created - The user account for ''ChosenUsername'' (talk) has been created." should be displayed.
# Edit the new user's page with "NewUser" template:
##Click on ''ChosenUsername'' (should open <nowiki>https://gretlwiki.econ.univpm.it/index.php?title=User</nowiki>:''ChosenUsername''&action=edit&redlink=1)
##Add the following text to the new page <nowiki>{{NewUser|</nowiki>''ChosenUsername''<nowiki>}}</nowiki>
#Save the page and send the credential to the new user if you create account manually.

===Delete user===
To delete a user:

#First, look for contributions to be deleted.
# Go to [[Special:UserMerge]].
# In "Old user (merge from)" insert the username you want to delete, in "New user (merge to)" insert '''DeleteUser''' username. ''DeleteUser'' is a special user created to this scope.
#Check the "Delete old user" checkbox.
#Click on ''Merge user''.

User:Atecon

2024-01-29T14:53:52Z

DeFeroci: Created page with "{{NewUser|Atecon}}"

User:TheoPanagiotidis

2023-12-23T00:16:45Z

DeFeroci: Created page with "{{NewUser|TheoPanagiotidis}}"

Blog

2023-10-31T18:39:09Z

DeFeroci: Fixed formatting

Resources

2023-10-26T13:20:59Z

DeFeroci: Added GitHub sources

Useful links:

* [https://gretl.sourceforge.net/ Gretl page on sourceforge]
* Download gretl:
** [https://gretl.sourceforge.net/win32/ For Windows]
** [https://gretl.sourceforge.net/osx.html For macOS]
** [https://gretl.sourceforge.net/#dl Source package]
** [https://sourceforge.net/projects/gretl/files/snapshots/ Current snapshot]
* [http://sourceforge.net/projects/gretl/files/manual/ Manual and learning resources]
* [https://gretl.sourceforge.net/cgi-bin/gretldata.cgi?opt=SHOW_FUNCS Gretl function packages]
* [https://gretlml.univpm.it/postorius/lists/ Gretl mailing list]
* [https://www.youtube.com/channel/UCM-s19lycOv9ZKX1K_KROIA/featured%7C Gretl Team YouTube channel]
* [https://github.com/gretl-project Gretl project on GitHub]
* [https://github.com/gretl-project/material-on-gretl/wiki Parallel wiki on GitHub]

Social:
* https://econtwitter.net/@gretl
* https://twitter.com/gretl_stats

Other projects:

* [http://www.gnu.org/ Free Software Foundation]
* [http://www.gnu.org/ Gnuplot]

Blog

2023-10-25T11:30:35Z

DeFeroci: Removed Blog title

New features, fixed bugs, and software news are shown here

Blog

2023-10-25T11:30:02Z

DeFeroci: Page creation

=Blog=
New features, fixed bugs, and software news are shown here

Main Page

2023-10-25T11:24:01Z

DeFeroci: Rename “What’s new” and add Blog page

<div class="MainPageLogo">
<div>gretlwiki</div>
the gretl software wiki
</div>

<br>
Gretl (Gnu Regression, Econometrics and Time-series Library) is a cross-platform software package for econometric analysis, written in the C programming language.

This wiki was created for the purpose of extending the information given in the manual and documentation, and for easy access.

<div class="MainPageContainer">
<div class="MainPageBlock">
<span class="MainPageBlockTitle">Learn gretl</span>
* [[Get into|Get into gretl]]
* [[Code examples for beginners]]
* [[Gretl for programmers]]
</div>

<div class="MainPageBlock">
<span class="MainPageBlockTitle">Use gretl</span>
* [[Tips and tricks]]
* [[Replication papers]]
</div>
<div class="MainPageBlock">
<span class="MainPageBlockTitle">Resources</span>

*[[Resources|External resources]]
*[[Books]]
</div>

<hr>

<div class="MainPageBlock">
<span class="MainPageBlockTitle">About the wiki</span>
* [[Wiki rules]]
* [[Wiki| How to]]

</div>

<div class="MainPageBlock">
<span class="MainPageBlockTitle">What’s new</span>
* [[Blog]]
* [[Gretlwiki café|The wiki café]]. Where to share ideas and make suggestions.
<div>

</div>
__NOTOC__

Gretlwiki café

2023-10-23T08:22:21Z

DeFeroci: Change month

Gretlwiki café

2023-09-10T13:48:55Z

DeFeroci: Change month

Gretlwiki café

2023-05-04T12:29:58Z

DeFeroci: Month discussions

Gretlwiki café

2023-04-02T20:18:14Z

DeFeroci: chenge month

Resources

2023-03-13T10:24:11Z

DeFeroci: Add socials

Useful links:

* [https://gretl.sourceforge.net/ Gretl page on sourceforge]
* Download gretl:
** [https://gretl.sourceforge.net/win32/ For Windows]
** [https://gretl.sourceforge.net/osx.html For macOS]
** [https://gretl.sourceforge.net/#dl Source package]
** [https://sourceforge.net/projects/gretl/files/snapshots/ Current snapshot]
* [http://sourceforge.net/projects/gretl/files/manual/ Manual and learning resources]
* [https://gretl.sourceforge.net/cgi-bin/gretldata.cgi?opt=SHOW_FUNCS Gretl function packages]
* [https://gretlml.univpm.it/postorius/lists/ Gretl mailing list]
* [https://www.youtube.com/channel/UCM-s19lycOv9ZKX1K_KROIA/featured%7C Gretl Team YouTube channel]

Social:
* https://econtwitter.net/@gretl
* https://twitter.com/gretl_stats

Other projects:

* [http://www.gnu.org/ Free Software Foundation]
* [http://www.gnu.org/ Gnuplot]

Gretlwiki café

2023-03-05T19:44:05Z

DeFeroci: Change month

Get into

2023-02-27T23:37:20Z

DeFeroci:

== Download and install Gretl ==

=== Windows ===
You can download Gretl from this page: [https://gretl.sourceforge.net/win32/ Gretl for Microsoft Windows]

If you have no specific needs, simply download the ''latest release'' of ''self installer'' according to the processor you have. (''Note:'' if you don't know what type of processor you have, go to ''Settings → System → About'' and under ''System type'' you can see whether your processor is 32-bit or 64-bit.)

After downloading the ''installation file'', run it.

==== System requirements ====
As of version 1.9.4, gretl requires Windows XP or higher and a processor that supports the SSE2 instruction set. SSE2 support is found in all modern processors; it is absent in AMD CPUs prior to the Athlon 64, and in Intel CPUs prior to the Pentium 4.

=== MacOS ===

'''[https://gretl.sourceforge.net/osx.html Gretl for for macOS]'''

If you're running OS X 10.6, 10.7 or 10.8 ("Snow Leopard", "Lion" or "Mountain Lion") we suggest trying the 2021a release of gretl. If you're running OS X 10.5 or earlier please see our gretl for legacy Macs page.

== Compile Gretl ==

Get into

2023-02-27T14:28:29Z

DeFeroci:

=== Download and install Gretl ===

==== Windows ====

'''[https://gretl.sourceforge.net/win32/ Gretl for Microsoft Windows]:'''

System requirements. As of version 1.9.4, gretl requires Windows XP or higher and a processor that supports the SSE2 instruction set. SSE2 support is found in all modern processors; it is absent in AMD CPUs prior to the Athlon 64, and in Intel CPUs prior to the Pentium 4.

==== MacOS ====

'''[https://gretl.sourceforge.net/osx.html Gretl for for macOS]'''

If you're running OS X 10.6, 10.7 or 10.8 ("Snow Leopard", "Lion" or "Mountain Lion") we suggest trying the 2021a release of gretl. If you're running OS X 10.5 or earlier please see our gretl for legacy Macs page.

=== Compile Gretl ===

User:SvenS

2023-02-27T14:10:34Z

DeFeroci: Created page with "{{NewUser|SvenS}}"

Tips and tricks

2023-02-25T21:51:53Z

DeFeroci:

=== Step monitor ===
It is sometimes irritating when a calculation takes very long and nothing appears to happen. In such cases a step monitor may be useful to indicate the state of the calculations. It is a simple gimmick.

Take, as an example, a modification of the Listing 37.1: Finding the minimum of the Rosenbrock function with the BFGSmax routine given in Gretl's user guide. The <code>printf</code> command prints the values of x and y and ends with a carriage return. The command <code>flush</code> induces printing at each step. To simulate a time consuming routine, a delay of .003 has been inserted by giving the command <code>sleep(.003)</code>.

Open the the gretl script editor (File → Script files → New script) and paste the following code:
<pre>
set verbose off
# This defines the function to be maximized
function scalar Rosenbrock( const matrix param "parameters" )
scalar x = param[1]
scalar y = param[2]
printf "x =%7.4f, y =%7.4f \r",x,y # the information printed at each step
flush # this induces immediate printing
sleep(.003) # this simulates a time-consuming process
return -(1-x)^2 - 100 * (y - x^2)^2
end function

# This invokes the maximization routine
matrix theta = {0, 0} # initial values for theta
set max_verbose off
M = BFGSmax(&theta, Rosenbrock(theta) )
printf " \r" # destroy the last step message
flush # flush it
printf "\ntheta: %8.4f \n", theta
</pre>
Now run the script (push the gears button or Ctrl+R). The successive estimates of x and y will be monitored. Other information can easily be monitored as well, the value of the criterion <code>-(1-x)^2 - 100 * (y - x^2)^2</code> for instance, by simply including it in the <code>printf</code> command in the Rosenbrook function.

=== "=" trick for eval ===
Sometimes you simply need to check the result of an expression in the Gretl console, such as 2+2. To do this you should use the <code>eval</code> command like this:
<pre>
? eval 2+2
4
</pre>
Since without the command, gretl raises an error:
<pre>
? 2+2
Parse error at unexpected token '2'
</pre>
But <code>eval</code> is too long to type. You can use an <code>=</code> before the expression (as in a spreasheet) to get the same result as <code>eval</code>:
<pre>
? =2+2
4
</pre>

=== Backslash to split lines===
In some cases a line of code could be very long. Take for example the declaration of a matrix:
<pre>
matrix M = {1,2,3;4,5,6;7,8,9;10;11;12;13,14,15;16,17,18}
</pre>
It is difficult to read rows and columns. You can use the symbol <code>\</code> to split the line and improve readability.
<pre>
matrix M = { \
1,2,3; \
4,5,6; \
7,8,9; \
10,11,12; \
13,14,15; \
16,17,18}
</pre>

=== Execute portions of code ===
You can execute only a portion of code by highlighting it in the ''script editor'' window and running it with ''ctlr+r'' or the ''run'' button.

=== Custom ''Highlighting style'' ===
To use custom color highlighting in ''script window'' and '' console'' add the xml style file to <code>PATH/gtksourceview/</code>; where <code>PATH</code> is main Gretl directory. You can see it in ''Tools -> Preferences -> General''.

After that, go to ''Tools -> Preferences -> Editor'' and select your file name in ''Highlighting style'' drop-down list.

__FORCETOC__

Tips and tricks

2023-02-24T11:50:32Z

DeFeroci:

Gretlwiki café

2023-02-17T17:05:27Z

DeFeroci:

Books

2023-02-17T16:54:39Z

DeFeroci: Create table

{| class="wikitable sortable"
|+
!Title
!Author
!Language
!Link
|-
|Using gretl for Principles of Econometrics
|Lee C. Adkins
|ENG
|https://www.learneconometrics.com/gretl/index.html
|-
|ANALYSIS OF ECONOMICS DATA: AN INTRODUCTION TO ECONOMETRICS
|A. Colin Cameron
|ENG
|https://cameron.econ.ucdavis.edu/aed/
|-
|Introduction to Econometrics
|Dougherty
|ENG
|https://global.oup.com/uk/orc/busecon/economics/dougherty5e/
https://global.oup.com/uk/orc/busecon/economics/dougherty5e/
|-
|Einführung in die Ökonometrie
|Peter Hackl
|GER
|https://www.pearson.de/einfuehrung-in-die-oekonometrie-9783868941562
|-
|Ekonometria Rozwiązywanie problemów z wykorzystaniem programu GRETL
|Tadeusz Kufel
|POL
|https://ksiegarnia.pwn.pl/Ekonometria-Rozwiazywanie-problemow-z-wykorzystaniem-programu-GRETL,68470501,p.html
|-
|Эконометрика. Решение задач с применением пакета программ GRETL
|Tadeusz Kufel
|RUS
|http://www.kufel.torun.pl/ru/index.html
|-
|Ökonometrie verstehen mit Gretl
|Jürgen Malitte
Sven Schreiber
|GER
|https://link.springer.com/book/10.1007%2F978-3-662-58275-6
|-
|Basic Econometrics
|Riccardo "Jack" Lucchetti
|ENG
|http://www2.econ.univpm.it/servizi/hpp/lucchetti/didattica/basic.pdf
|-
|Dealing with Econometrics: Real World Cases with Cross-Sectional Data
|Jordi Ripollés
Inmaculada Martínez-Zarzoso
Maite Alguacil
|ENG
|https://www.cambridgescholars.com/product/978-1-5275-8500-3
|}

Gretlwiki café

2023-02-09T19:16:38Z

DeFeroci: Add February

Tips and tricks

2023-01-14T00:17:25Z

DeFeroci:

Tips and tricks

2023-01-14T00:16:40Z

DeFeroci: Add "=" trick for eval

Gretlwiki café

2023-01-13T18:16:30Z

DeFeroci: change date

User:DeFeroci

2023-01-10T01:18:47Z

DeFeroci: /* Account creation requests */

Hi, I'm Federico.

if you have any advice or suggestions on the wiki please contact me!

== Account creation requests ==

To apply to be registered write me at '''gre<span style="display:none">@gmail.com</span>tl<span style="display:none">.org</span><span>wiki</span>[at]de<span style="display:none">moz</span>f<span style="display:none">moz</span>er<span style="display:none">gmail</span>oci[dot]mo<span style="display:none">.org</span><span>zm</span><span style="display:none">~</span>ail[dot]c<span style="display:none">48</span>om'''

The mail must contain:
* A valid username (start with capital letter and [[Special:ListUsers|available]]) under which you want to be registered.
* Whether or not you want to be registered by the e-mail you write from.
* Some generic information of yours to make sure you are part of the gretl community.

Tips and tricks

2023-01-04T01:56:31Z

DeFeroci: fixed formatting

Books

2022-12-27T18:52:55Z

DeFeroci: Created page with "[https://sourceforge.net/projects/gretl/files/manual/hansl-primer.pdf/download A Hansl Primer - The scripting language of gretl in 55 minutes]"

[https://sourceforge.net/projects/gretl/files/manual/hansl-primer.pdf/download A Hansl Primer - The scripting language of gretl in 55 minutes]

Main Page

2022-12-26T15:03:38Z

DeFeroci:

<div class="MainPageLogo">
<div>gretlwiki</div>
the gretl software wiki
</div>

<br>
Gretl (Gnu Regression, Econometrics and Time-series Library) is a cross-platform software package for econometric analysis, written in the C programming language.

This wiki was created for the purpose of extending the information given in the manual and documentation, and for easy access.

<div class="MainPageContainer">
<div class="MainPageBlock">
<span class="MainPageBlockTitle">Learn gretl</span>
* [[Get into|Get into gretl]]
* [[Code examples for beginners]]
* [[Gretl for programmers]]
</div>

<div class="MainPageBlock">
<span class="MainPageBlockTitle">Use gretl</span>
* [[Tips and tricks]]
* [[Replication papers]]
</div>
<div class="MainPageBlock">
<span class="MainPageBlockTitle">Resources</span>

*[[Resources|External resources]]
*[[Books]]
</div>

<hr>

<div class="MainPageBlock">
<span class="MainPageBlockTitle">About the wiki</span>
* [[Wiki rules]]
* [[Wiki| How to]]

</div>

<div class="MainPageBlock">
<span class="MainPageBlockTitle">gretlwiki café</span>
* [[Gretlwiki café|The wiki café]]. Where to share ideas and make suggestions.
<div>

</div>
__NOTOC__

Gretlwiki cafe

2022-12-26T14:58:40Z

DeFeroci: Redirected page to Gretlwiki café

#REDIRECT [[Gretlwiki café]]

__NOTOC__

Gretlwiki cafe

2022-12-26T14:57:40Z

DeFeroci: Created blank page

Gretlwiki café

2022-12-26T14:56:10Z

DeFeroci: Created page with "This page is designed as a meeting and discussion place where we can talk about gretl and how to improve the wiki. You can start a discussion adding to this page <pre> === DiscussionTitle ~~~~ === Text </pre> And comment with <pre> :comment text ~~~~ </pre> == December 2022 discussions =="

Main Page

2022-12-26T14:55:58Z

DeFeroci:

<div class="MainPageLogo">
<div>gretlwiki</div>
the gretl software wiki
</div>

<br>
Gretl (Gnu Regression, Econometrics and Time-series Library) is a cross-platform software package for econometric analysis, written in the C programming language.

This wiki was created for the purpose of extending the information given in the manual and documentation, and for easy access.

<div class="MainPageContainer">
<div class="MainPageBlock">
<span class="MainPageBlockTitle">Learn gretl</span>
* [[Get into|Get into gretl]]
* [[Code examples for beginners]]
* [[Gretl for programmers]]
</div>

<div class="MainPageBlock">
<span class="MainPageBlockTitle">Use gretl</span>
* [[Tips and tricks]]
* [[Replication papers]]
</div>
<div class="MainPageBlock">
<span class="MainPageBlockTitle">Resources</span>

*[[Resources|External resources]]
*Books
</div>

<hr>

<div class="MainPageBlock">
<span class="MainPageBlockTitle">About the wiki</span>
* [[Wiki rules]]
* [[Wiki| How to]]

</div>

<div class="MainPageBlock">
<span class="MainPageBlockTitle">gretlwiki café</span>
* [[Gretlwiki café|The wiki café]]. Where to share ideas and make suggestions.
<div>

</div>
__NOTOC__

Replication papers

2022-12-26T14:11:55Z

DeFeroci: Fix table

The table collects papers that are replicated or explained in gretl on the pages in the “Link” column.
{| class="wikitable sortable"
|+Paper list
!Date
!Author
!Title
!Link
|-
|
|
|
|
|-
|
|
|
|
|-
|
|
|
|
|}

Replication papers

2022-12-26T03:01:11Z

DeFeroci: Created page with "The table collects papers that are replicated or explained in gretl on the pages in the “Link” column. {| class="wikitable" |+Paper List !Date !Author !Title !Link |}"

The table collects papers that are replicated or explained in gretl on the pages in the “Link” column.
{| class="wikitable"
|+Paper List
!Date
!Author
!Title
!Link
|}

Resources

2022-12-26T02:43:44Z

DeFeroci:

Useful links:

* [https://gretl.sourceforge.net/ Gretl page on sourceforge]
* Download gretl:
** [https://gretl.sourceforge.net/win32/ For Windows]
** [https://gretl.sourceforge.net/osx.html For macOS]
** [https://gretl.sourceforge.net/#dl Source package]
** [https://sourceforge.net/projects/gretl/files/snapshots/ Current snapshot]
* [http://sourceforge.net/projects/gretl/files/manual/ Manual and learning resources]
* [https://gretl.sourceforge.net/cgi-bin/gretldata.cgi?opt=SHOW_FUNCS Gretl function packages]
* [https://gretlml.univpm.it/postorius/lists/ Gretl mailing list]
* [https://www.youtube.com/channel/UCM-s19lycOv9ZKX1K_KROIA/featured%7C Gretl Team YouTube channel]

Other projects:

* [http://www.gnu.org/ Free Software Foundation]
* [http://www.gnu.org/ Gnuplot]

Resources

2022-12-26T02:42:01Z

DeFeroci:

Main Page

2022-12-26T02:38:48Z

DeFeroci:

<div class="MainPageLogo">
<div>gretlwiki</div>
the gretl software wiki
</div>

<br>
Gretl (Gnu Regression, Econometrics and Time-series Library) is a cross-platform software package for econometric analysis, written in the C programming language.

This wiki was created for the purpose of extending the information given in the manual and documentation, and for easy access.

<div class="MainPageContainer">
<div class="MainPageBlock">
<span class="MainPageBlockTitle">Learn gretl</span>
* [[Get into|Get into gretl]]
* [[Code examples for beginners]]
* [[Gretl for programmers]]
</div>

<div class="MainPageBlock">
<span class="MainPageBlockTitle">Use gretl</span>
* [[Tips and tricks]]
* [[Replication papers]]
</div>
<div class="MainPageBlock">
<span class="MainPageBlockTitle">Resources</span>

*[[Resources|External resources]]
*Books
</div>

<hr>

<div class="MainPageBlock">
<span class="MainPageBlockTitle">About the wiki</span>
* [[Wiki rules]]
* [[Wiki| How to]]

</div>

<div class="MainPageBlock">
<span class="MainPageBlockTitle">gretlwiki café</span>
* [[Gretlwikicafe|The wiki café]]. Where to share ideas and make suggestions.
<div>

</div>
__NOTOC__

Wiki rules

2022-12-25T16:51:16Z

DeFeroci: Basic rules

#You are solely responsible for what you post.
#Use your best judgment.
#Respect other users.

User:DeFeroci

2022-12-23T22:34:30Z

DeFeroci: Protected "User:DeFeroci" ([Edit=Allow only administrators] (indefinite) [Move=Allow only administrators] (indefinite))

Hi, I'm Federico.

if you have any advice or suggestions on the wiki please contact me!

== Account creation requests ==

To apply to be registered write me at '''dh<span style="display:none">@gmail.com</span>tag<span style="display:none">.org</span><span>zr</span><span style="display:none">moz</span>de[at]moz<span style="display:none">abc</span>ma<span style="display:none">48</span>il[dot]com'''

The mail must contain:
* A valid username (start with capital letter and [[Special:ListUsers|available]]) under which you want to be registered.
* Whether or not you want to be registered by the e-mail you write from.
* Some generic information of yours to make sure you are part of the gretl community.

User:DeFeroci

2022-12-23T22:34:21Z

DeFeroci: Created page with "Hi, I'm Federico. if you have any advice or suggestions on the wiki please contact me! == Account creation requests == To apply to be registered write me at '''dh<span style="display:none">@gmail.com</span>tag<span style="display:none">.org</span><span>zr</span><span style="display:none">moz</span>de[at]moz<span style="display:none">abc</span>ma<span style="display:none">48</span>il[dot]com''' The mail must contain: * A valid username (start with capital letter and..."

Main Page

2022-12-23T22:16:24Z

DeFeroci:

<div class="MainPageLogo">
<div>gretlwiki</div>
the gretl software wiki
</div>

<br>
Gretl (Gnu Regression, Econometrics and Time-series Library) is a cross-platform software package for econometric analysis, written in the C programming language.

This wiki was created for the purpose of extending the information given in the manual and documentation, and for easy access.

<div class="MainPageContainer">
<div class="MainPageBlock">
<span class="MainPageBlockTitle">Learn gretl</span>
* [[Get into|Get into gretl]]
* [[Code examples for beginners]]
* [[Gretl for programmers]]
</div>

<div class="MainPageBlock">
<span class="MainPageBlockTitle">Use gretl</span>
* [[Tips and tricks]]
</div>
<div class="MainPageBlock">
<span class="MainPageBlockTitle">Resources</span>

*[[Resources|External resources]]
*Books
*[https://www.youtube.com/channel/UCM-s19lycOv9ZKX1K_KROIA/featured| Gretl Team YouTube channel]
</div>

<hr>

<div class="MainPageBlock">
<span class="MainPageBlockTitle">About the wiki</span>
* [[Wiki rules]]
* [[Wiki| How to]]

</div>

<div class="MainPageBlock">
<span class="MainPageBlockTitle">gretlwiki café</span>
* [[Gretlwikicafe|The wiki café]]. Where to share ideas and make suggestions.
<div>

</div>
__NOTOC__

MediaWiki:Common.css

2022-12-23T22:14:11Z

DeFeroci:

/* CSS placed here will be applied to all skins */

/* Main page */

.MainPageLogo {
text-align:center;
color:#8a6736;
font-style: italic;
}

.MainPageLogo div {
font-size: 4em;
font-family:New Century Schoolbook;
}

.MainPageBlock {
float: left;
width: 33%;
}

.MainPageBlockTitle {
font-weight: bold;
color: #7d5823;
}

/* CSS for templates */

.WarningTemplate {
background-color:red;
color:white;
font-size:2em;
text-align:center
}