Robert,
I find the following (adapted from your example) is executed without
complaint, and yields a reasonable-looking graphic in Maxima 5.9.2 (Windows).
plot2d ([%e^x, x, [parametric, t, log(t), [t, 1e-10, 10]]], [x, -10,
10], [y, -10, 10], [gnuplot_preamble, "set size ratio -1"], [nticks,
100]);
notes:
(1) I don't know of a way to plot functions with different ranges
without resorting to the parametric option. That seems like a generally
useful capability, maybe we should consider adding it.
(2) Gnuplot has to be told explicitly to make the aspect ratio equal to 1.
That seems like a misfeature to me. Rats.
(3) Parametric plotting doesn't exercise the adaptive sampling algorithm
(although it should) so I increased nticks explicitly.
For what it's worth,
Robert Dodier