qlibs::smootherDESF Class Reference

Double exponential smoothing (Holt’s Method) More...

#include <smoother.hpp>

Inheritance diagram for qlibs::smootherDESF:

Public Member Functions
virtual	~smootherDESF ()
	Setup an initialize the Double exponential smoothing instance.
bool	setup (const real_t a, const real_t b, const size_t nS)
real_t	smooth (const real_t x) override
	Perform the smooth operation recursively for the input signal x.
Public Member Functions inherited from qlibs::smoother
virtual	~smoother ()
bool	isInitialized (void) const
	Check if the smoother filter is initialized.
bool	reset (void)
	Reset the the smoother filter.

Detailed Description

Double exponential smoothing (Holt’s Method)

Constructor & Destructor Documentation

~smootherDESF()

virtual qlibs::smootherDESF::~smootherDESF ( )

inlinevirtual

Setup an initialize the Double exponential smoothing instance.

Parameters

[in]	a	Weight for the level [ 0 < a < 1 ]
[in]	b	Weight for the trend [ 0 < b < 1 ]
[in]	nS	Number of steps for the forecast

Returns

true on success, otherwise return false.

Member Function Documentation

setup()

bool smootherDESF::setup	(	const real_t	a,
		const real_t	b,
		const size_t	nS )

smooth()

real_t smootherDESF::smooth ( const real_t x )

overridevirtual

Perform the smooth operation recursively for the input signal x.

Precondition

Instance must be previously initialized

Parameters

[in]

x

A sample of the input signal.

Returns

The smoothed output.

Implements qlibs::smoother.