Maybe useful for you, the attached file.
It can be opened in gretl it with Tools -> Gnuplot.

You only need to edit it with a simple text editor (as Notepad)
and change the three columns of data with the ones you need to plot.
Obvously, the axes are specified in splot, and colours and other settings in set linetype.

Best
Juan

De: T L <tobbenlorentzen@gmail.com>
Enviado: xoves, 23 de febreiro de 2023 13:05
Para: Gretl list <gretl-users@gretlml.univpm.it>
Asunto: [Gretl-users] Editing 3D-plot
 
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Hi all,
I made a 3D-plot in Gretl - based on data from the data-file. Is there any easy way to edit the 3D-graph/figure, for example adjusting the min-max value of the axes etc. etc.?

Regards,
Torbjørn