Hi Ines,
After testing the provided code in MATLAB R2022b, following code can be tested to zoom in all the subplots when any specific subplot is zoomed in a figure.
% get some random integer vectors for original, rectified and smoothed
% signal
original_signal = randi(100, 500, 1);
rectified_signal = randi(75, 500, 1);
smoothed_signal = randi(25, 500, 1);
t = 1:500;
% Plot the original signal, rectified signal, and smoothed signal
figure;
h1 = subplot(3,1,1);
plot(t, original_signal);
title('Original Signal');
xlabel('Time (s)');
ylabel('Amplitude');
grid on;
h2 = subplot(3,1,2);
plot(t, rectified_signal);
title('Rectified Signal');
xlabel('Time (s)');
ylabel('Amplitude');
grid on;
h3 = subplot(3,1,3);
plot(t, smoothed_signal);
title('Linear Envelope');
xlabel('Time (s)');
ylabel('Amplitude');
grid on;
% Set the same x-axis limits for all subplots
common_xlim = [min(t), max(t)]; % Set x-axis limits to min and max of original signal
set(h1, 'XLim', common_xlim);
set(h2, 'XLim', common_xlim);
set(h3, 'XLim', common_xlim);
zoom on;
% Link the x-axis of the subplots
linkaxes([h1 h2 h3],'x')
To get more information on linkaxes, you can refer the following link.
