Could anyone help me to understand the peaks?

I have the fft of the signal as shown in the figure attached

%Angle calculation

[~, indx] = max(abs(X));

Phase = angle(X(indx));

How can get the information of second highest peak? when I use max it gives only the highest peak of all, but i want the info about the second peak and third peak. How can i get them?

Answer 1

[Alex Mcaulley]

You can use finpeaks function

https://es.mathworks.com/help/signal/ref/findpeaks.html