How can I plot an ECG txt file for analysis on Matlab?
16 vues (au cours des 30 derniers jours)
Star Strider le 10 Nov 2020
First, read it and assign the variables:
D = readmatrix('ECG_10.11.20_11.57.59.txt', 'HeaderLines',6);
EKG = -D(:,1); % EKG Trace (mV)
t = D(:,2)*1E-3; % Time Vector (s)
There are a lot of noise and other problems with that signal, so it is going to require a significant amount of processing. It is not regularly-sampled, so the Signal Processing Toolbox resample function will be necessary to assign it to a consistent sampling interval before further processing. (I would resample it to a sampling frequency of 130 Hz.) Note that the leads were apparently reversed, the resons for negating the EKG signal.
I leave all that to you.
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Mathieu NOE le 10 Nov 2020
if you work with a recent release of matlab, there are plenty of solutions... but not all are fast. usually the "modern" function can do very nice on complex formatted files, but the price is it's slow
you can try :
but if you just need something simple , fast for simple files , I really enjoy the readclm function - see attached files
it will gives you the header txt and the data , and it's fast !
DATE/TIME: 10.11.20 11.57.59
DEVICE_ID: 7B5F7922 DEVICE_VERSION: 3.0.56 APP_VERSION: 1.2.0
all the best