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Re: [ferret_users] Re: FFTA

Dear Yadidya,

Fast Fourier Transform i.e. ffta yields the same unit of the variable as it is the amplitude of the variable for various frequencies. so on y-axis it is celcius to best of my knowledge. But if you make it square i.e. [ffts[var]]^2 then it became Intensity.

you can check this link as well


regards, saurabh

On Mon, Jun 4, 2018 at 9:32 PM, Yadidya Badarvada <israeljedidiah@xxxxxxxxx> wrote:
Dear Ferreters,

What are the units of y-axis when the function "ffta" is used?
If I'm using the time-series data of temperature, then is it "(celcius)^2" or "(Celcius*sec) ?




Saurabh Rathore
Research Scholar (PhD.)
Centre For Oceans, Rivers, Atmosphere & Land Science Technology
Indian Institute Of Technology, Kharagpur
contact :- 91- 8345984434

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