periodogram Function

public pure function periodogram(win, x, fs, nfft) result(rst)

Computes the periodogram of a signal.

Arguments

Type	Intent	Optional	Attributes		Name
class(window),	intent(in)			::	win	The window to apply. The size of the window must be non-zero and positive-valued.
real(kind=real64),	intent(in)			::	x(:)	The signal to transform.
real(kind=real64),	intent(in),	optional		::	fs	An optional input, that if supplied, allows for normalization of the computed spectrum by the frequency resolution.
integer(kind=int32),	intent(in),	optional		::	nfft	An optional input that can be used to force the length of each individual DFT operation by padding any remaining space with zeros. If not supplied, the window size is used to determine the size of the DFT.

Return Value real(kind=real64), allocatable, (:)

An array containing the discrete PSD estimate. The estimate is returned at discrete frequency intervals that can be determined by a call to frequency_bin_width.