Welch PSD Example Problem

[tgterra]

Hello Pedro,

When I try to run the frequency domain Welch PSD example with SampleECG.txt file I got a different plot figure

Example code:

`
import biosppy
import pyhrv.frequency_domain as fd
from opensignalsreader import OpenSignalsReader

signal = OpenSignalsReader('SampleECG.txt').signal('ECG')
rpeaks = biosppy.signals.ecg.ecg(signal)[2]
result = fd.welch_psd(rpeaks=rpeaks)`

When the result should be:

[PGomes92]

Hi @tgterra,

The issue is due to the current SampleECG.txt containing a signal of too short duration for a proper PSD computation. It might happen that I have replaced the SampleECG.txt over the last months and didn't update the output results in the pyHRV documentation.

The new update will come with a feature load sample NNI series which come with pyHRV in order to avoid this confusion.

I will fix the documentation along with it and apologies for the confusion that this caused!

Edit: Accidentally closed this issue and my reply too soon. I reopened this issue and completed my response.