[Octave-bug-tracker] [bug #39267] signal package: findpeaks: Error:subscript indices must be either positive integers or logicals

[Juan Pablo Carbajal]

Follow-up Comment #3, bug #39267 (project octave):

Hi,

Thanks, I have fixed it in the repository.

Anyways with the signal provided the sampling is too low to get all peaks.
Trying with the following works ok (remember that findpeaks uses a rough
estimates of first and second derivative, you will need to tune parameters to
get good results).

    t = linspace(0,400,1e3)';
    y1 = sin(2*pi*f1/fs*t); 
    y2 = sin(2*pi*f2/fs*t); 
    data1 = 2 + (0.2*y1 + y2); 
    [pks idx] = findpeaks(data1);
    plot (data1,'-',idx,pks,'o')


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