NOTE: The following is based on an unanswered question posted here: How to plot the Hilbert Spectrum in Hilbert-Huang transform? , based on the usage of the "plot_hht" from here: (https://www.mathworks.com/matlabcentral/fileexchange/19681-hilbert-huang-transform)
From what I understand the "plot_hht" does, after applying EMD to a signal, the IMF's of the signal remain. The Hilbert Transform is then applied to each IMF, and the resulting phase angles are somehow used to help find the instantaneous frequency (with respect to time).
Is it possible to represent these instantaneous frequencies vs time, with a third dimension, its strength/amplitude?
Thanks in advance.