how to make an axis at the centre (symmetric) of a damped oscillation?

Hi there,

For a graph like this, how can I make an axis at the centre of the waves (i.e., along the red marks which i have made. All i want to do is I have two similar graphs with changing amplitudes. I wanted to put them in a same graph to compare the amplitude and explain how the amplitude changes with the change in parameters). Any help would be highly appreciated. Attachment made below

Thanks!!

Answer 1

[KSSV]

Calculate the mean of the data and subtract from the data.

[Chaitanya Bade]

as in? can be more clear. I am new to matlab and getting myself used to it. Do you have any code to do that?

Thanks!

[KSSV]

Say you have t as time (x axis) and a as amplitude (y axis).

a1 = a-mean(a) ;
plot(t,a1) ;

[Chaitanya Bade]

Thanks heaps!! that worked

[KSSV]

Thanks is accepting the answer.....:)