Hi all,
Federico Fiorani and me have published a new package named
"candlesticks". As the name suggests, that package allows you to
(easily) create a so called candlestick plot used for financial data.
The functionality can be accessed either via scripting or via the GUI.
Both the help text and sample script can be found here:
http://gretl.sourceforge.net/current_fnfiles/unzipped/candlesticks.gfn
Please ask questions and report bugs on the gretl mailing list if possible.
Enjoy!
Artur