Calculate 6 degree of freedom representation of a log-periodogram

Usage

linear_approx(pgram_obj)

Arguments

pgram_obj,: object containing a log-transformed periodogram and its frequency arguments

Value

pgram_summary, named vector containing the desired 6 degree of freedom representation

Details

Fits disjoint piece-wise linear models over 3 periodicity bands of interest (greater than a day, a day to 150 minutes, shorter than 150 minutes), returns the slopes and midpoints to form a 6-df representation of the full periodogram