To align continuous axes, it is important to keep the limits consistent
across all plots in the layout. You can set the limits by passing a function
directly to the limits or xlim/ylim argument, using ... only.
Alternatively, you can add a continuous_limits() object to the layout. For
the quad_layout() function, you must specify x/y arguments. For other
layouts, you should pass the limits using ... directly.
continuous_limits(..., x = waiver(), y = waiver())A list of two numeric values, specifying the left/lower limit and the right/upper limit of the scale.
Same as ..., but specifically for quad_layout().