add another y axis

Hi Can anyone tell me how to add another y axis (not x) on the RHS of my graph? I want it has the same settings as the LHS one. Thanks

Answer 1

[Yao Li]

I only know plotyy. But not sure whether it is what you are looking for.

[Linden]

plotyy needs two series. I only have one. Thanks

[Yao Li]

Then I'm afraid you have to add the axis yourself manually.

[Mahdi]

You can actually use plotyy and use the same series twice. That would be the quick cheap way of doing it.