qts2sqts: QTS Transformation to Smoothed Quaternion Time Series

In squat: Statistics for Quaternion Temporal Data

QTS Transformation to Smoothed Quaternion Time Series

Description

This function smooths a given QTS using a b-spline functional representation.

Usage

qts2sqts(x, spar = 0)

Arguments

x	An object of class qts.
spar	smoothing parameter, typically (but not necessarily) in (0,1]. When spar is specified, the coefficient \lambda of the integral of the squared second derivative in the fit (penalized log likelihood) criterion is a monotone function of spar, see the details below. Alternatively lambda may be specified instead of the scale free spar=s.

Value

An object of class qts storing the smoothed QTS.

Examples

qts2sqts(vespa64$igp[[1]], spar = 0.3)

squat documentation built on Jan. 16, 2026, 1:07 a.m.