Hi Ansley,
Thank you for the tips!
define axis/e=1:5:1 e5axlet evals = _e[ge=e5ax]
So, I guess the physical(?) name for the E axis is "_E", as the physical name for the Y axis is "Y". Is that right? In other words, what you show above is parallel to
define/axis/y=1:5:1 y5ax
let yvals = y[gy=y5ax]
And thank you for the resolution of the problem. That's a nice conclusion. But I understand it's usually better to have a fixed axis.
Cheers,
Ryo