On Fri, 11 Sep 2015, Sven Schreiber wrote:
 Am 11.09.2015 um 19:43 schrieb Allin Cottrell:
> On Fri, 11 Sep 2015, Sven Schreiber wrote:
>
>> the common problem (with known solution) is to tell gnuplot to use only
>> a single y-axis.
>> But now (and amazingly for the first time in all those years,
>> apparently) I have the opposite problem: I want to distribute the
>> plotted lines to two separate y-axes, but gnuplot (or rather its gretl
>> interface) won't let me do it. What can I do?
>
> Gretl doesn't support this as an option to the "gnuplot" (or
"plot")
> command, but it's easy enough in gnuplot. Example:
 I appreciate your help, but after the word "easy" there are >10 lines of
 instructions ;-) 
OK, but as you said, this is a low-frequency request. I suppose we 
could have an option to force two y-axes (either ignored or 
generating an error if only one series is given). This would be fine 
for just two series plotted, but for more than two it's not obvious 
how we would assign series to the respective y-axes. If anyone has 
clever ideas I'm willing to listen!
Allin