Convert Time Series (`ts`) to Frequency Series (`fs`)

Transforms a time series object to a frequency series by computing FFT.

Usage

to_fs(x, delta_f = NULL)

Arguments

x

A `ts` object.

delta_f

Optional. A numeric value indicating desired frequency resolution. If NULL, defaults to `sampling.freq / length(x)`.

Value

An `fs` object containing frequency-domain representation and metadata.