Hello everyone.
i have a 'phatetic' problem about analyze a time series. So i have 16 years-long time series data. I just had 3 components that works like superposition wave: trend, seasonal, and remainder component. But then i must have the seasonal component to be broke-downed more. So, i have to analyze the seasonal behavior that occur in 16-years, per year, per half year (because it occurs in tropic zone), and per month. All behaviours must be put on one plot. I had read about periodogram, spectrogram, and lomb but i just cant have it done like i want.
Please, have you ever done thing like im going to do? Any help will make me better. Thank you