MATLAB: Wavelet coherence index is incorrect

Question

Hola team. Regarduing the wavelet functions wchohere for my signal, when plotting this it provides an index stating 'Time(Index)'. This runs from 0 to 10,000 on the x-axis.

My signal is only 1000 data points long, therefore I confused as to why the x axis can be up to 10,000. Does anyone have any idea?

Code is:

x; %my signal1

y; %my signal2

figure; wcoherence(x,y,seconds(fs));

Gracias todos!

Answer 1

Hi Ben,

wcoherence(x,y,seconds(fs));

This line has error. I am assuming fs is your samping rate. and then you are directly converting it to seconds which wcoherence takes as time.

you need to make it:

wcoherence(x,y,seconds(1/fs))

for correct calculations.