Hey Ductho,
I believe the function ‘scatter’ can help you achieve your goal. The 'scatter' function comes with the option of specifying the circle colors, which can be a single color or an array , like in your case. You can also specify your circles to be filled.
Below is a short snippet on how to:
% Example data (replace with your own)
% f = ...; % Frequency array
% pv = ...; % Phase velocity array
% amp = ...; % Amplitude array
scatter(f, pv, 20, amp, 'filled'); % 20 is the marker size, adjust as needed
colormap(jet); % Choose colormap (e.g., jet, parula, hot, etc.)
colorbar; % Show colorbar
xlabel('Frequency (MHz)');
ylabel('Phase Velocity (km/s)');
title('Amplitude Spectra');
Please refer to the ‘scatter’ documentation to further explore the possibilities and modify your code as per your need
Hope that helps!
