[BUG] twinx() bugs

[co1emi11er2]

Details

Issue 1

Unitful integration works great but not with twinx().

I originally tried it with different units along the y axis. However, it does not work with the same units either. It would be great if different units along the y worked as well. Here is a mwe you can try:

using Unitful, Plots
const ft = u"ft"
plot([1, 2, 3, 4]ft, [10, 20, 30, 40]ft)
plot!(twinx(), [1, 2, 3, 4]ft, [1000, 2000, 3000, 4000]ft; right_y=true)

Issue 2

The other issue I came across was when putting twinx() plots with one needing aspect_ratio set to equal and the other not set. Here is a plot where it happens to work out and the ratios align.

However, if I have ratios that conflict, the two plots do not align properly anymore. You can see the red and blue plot now goes outside it's x_values that were correct in the first plot.

Backends

This bug occurs on ( insert x below )

Backend	yes	no	untested
gr (default)	x
pythonplot			x
plotlyjs			x
pgfplotsx			x
unicodeplots			x
inspectdr			x
gaston			x

Versions

Plots.jl version: 1.40.8
Backend version (]st -m <backend(s)>):
Output of versioninfo():
Julia Version 1.10.5
Commit 6f3fdf7b36 (2024-08-27 14:19 UTC)
Build Info:
Official https://julialang.org/ release
Platform Info:
OS: Windows (x86_64-w64-mingw32)
CPU: 16 × 11th Gen Intel(R) Core(TM) i7-11850H @ 2.50GHz
WORD_SIZE: 64
LIBM: libopenlibm
LLVM: libLLVM-15.0.7 (ORCJIT, tigerlake)
Threads: 1 default, 0 interactive, 1 GC (on 16 virtual cores)