Fill value of array from Realtime Source

[medum]

Hello,

I have an 1D-Array with integer values. 

And othersides i get realtime value and both signals are looking equal, just with an shift. 

How can I proof that this signal are equal? 

My Idea: 

I would put the realtime data into an array with the same size of the reference array. And then I would use correlationcoefficient to get the r_xy and later I would comapre that always.

[altenbach]

They are not equal if there is a shift.

If both are infinitely long periodic signal, there is an infinite number of shifts that would align them.

(You seem to start new discussions for the same old problem at a rapid-fire pace with incorrect subject lines. Why not keep it all in one place?)