leeoniya
commented
10 months ago do you actually want two x axes, or you just need to plot datasets that are not x-aligned?
if you just need to plot non-aligned-x datasets, you should use uPlot.join() to align / combine them: https://leeoniya.github.io/uPlot/demos/align-data.html
if you actually want a second x axis, look at https://leeoniya.github.io/uPlot/demos/time-periods.html
x1 = [1, 2, 3, 4, 5] y1 = [1, 2, 3, 4, 5]
x2 = [1.2, 2.5, 3.8, 7.9] y2 = [4.1, 3.4, 1.1, 3.5]
What if there are two x-axes?
This is not the case in the demo.