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wavelet coherence index is incorrect

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Ben
Ben on 23 Apr 2020
Commented: Ben on 23 Apr 2020
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!

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Accepted Answer

Deepak Gupta
Deepak Gupta on 23 Apr 2020
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.

  3 Comments

Ben
Ben on 23 Apr 2020
That solved, thank you.
Do you know, is it possible to change the yaxis from period to frequency (Hz)?
Deepak Gupta
Deepak Gupta on 23 Apr 2020
Use wcoherence(x,y,fs)
welcome

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