Trying to plot my bandpass filtered signal in a time series, but I need to divide the x values by 2000 (the sampling rate) to get it to plot in seconds instead of samples/seconds

Bandpass_channel2 = filtfilt(bandpass_filter, Double_chan2); % this is the filtered signal used

figure, plot(Bandpass_channel2) %% the plot but the x values are 10^5 (need to divide by 2k)

bch2 = Bandpass_channel2 / 2000; % this caused the y values to be divided by 2k not the x :(

TS = timeseries(bch2);

figure, plot(TS) % just added "time as the x-axis lable

Answer 1

[Mathieu NOE]

hello Rachel

in most of my matlab code, I have to get the samples amount and define explicitly the time vector like this

samples = length(data);
Fs = 1000; % example
dt = 1/Fs;
t = (0:samples-1)*dt;

plot(t,data) ; % time axis in seconds

so that it's pretty obvious you will plot the right time axis this way