Dear all, I would like to ask whether it is possible, within the gnuplot command in Gretl, to assign multiple series to the secondary y-axis. In the example script below, the aim is to plot both heating and gasoline prices on the y2 axis. I tried using a list of variables in the y2 option, but it does not work as expected. Is there a way to specify more than one series for y2 using the gnuplot command? Any suggestions or workarounds would be greatly appreciated. Best regards, Marco EXAMPLE SCRIPT: include yahoo_get.gfn nulldata 1500 setobs 5 2018-01-01 series wti = yahoo_price("CL=F",1) series brent = yahoo_price("BZ=F",1) series gasoline = yahoo_price("RB=F",1) series heating = yahoo_price("HO=F",1) delete index list Energy = wti brent gasoline heating list y2 = gasoline heating gnuplot Energy --time-series --with-lines --output=display --y2axis=gasoline _______________________________________________ Gretl-users mailing list --gretl-users(a)gretlml.univpm.it To unsubscribe send an email togretl-users-leave(a)gretlml.univpm.it Website:https://gretlml.univpm.it/postorius/lists/gretl-users.gretlml.univpm.it/

On Wed, Dec 10, 2025 at 7:47 AM MARCO TEDESCHI <m.tedeschi(a)staff.univpm.it&gt; wrote: > Dear all, > > I would like to ask whether it is possible, within the gnuplot command in Gretl, to assign multiple series to the secondary y-axis. As things stand, that's not possible without editing the gnuplot script (something you can do via the gretl GUI), or using gretl's GUI plot editor. However, it probably should be enabled; we'll take a look at that. We already allow comma-separated terms following some gnuplot options, as in "--⁠with-impulses=LRM,LRY", if an option is to be applied to more than one series. Being able to give a named list, as in your example, would also be nice. If you wish, you could file a feature request so this doesn't get forgotten!