So what ? I won't use ctioga for playing with my models, as it has not been designed with interactivity in mind, and will most probably never be (that would somehow defeat it's purpose). But I don't want to do the same work twice, especially if the second time is way more tedious than the first...
So I wrote a new backend,
gnuplot, whose job is to feed a file to gnuplot and tweak it so that
ctioga gets the data of all the plots. Imagine you have a file
biniou.gnu in the spirit of
a(x) = x**2 + 2*x + 1 plot a(x), x**2 - x
Then, you can plot both
x**2 - x with the following command-line:
ctioga --gnuplot biniou.gnu@1##2
Note that it only takes data ! Style is completely dismissed.