How can I plot time-frequency plot of a time series data

How can I plot time-frequency plot of a time series data

Answer 1

[Star Strider]

I don’t understand exactly waht you want, but the spectrogram function (Signal Processing Toolbox) will do time-frequency analyses and plots.

Answer 2

[Adam]

If you have the Signal Processing Toolbox

doc spectrogram

There are numerous arguments to the function, but they will depend on your data and how you want to bias the time resolution vs frequency resolution with windowing and overlapping, etc