fdasrvf (version 2.3.6)

warp_q_gamma: Warp SRSF

Description

This function warps srsf \(q\) by \(\gamma\)

Usage

warp_q_gamma(q, time, gamma, spl.int = FALSE)

Value

qnew warped function

Arguments

q

vector

time

time

gamma

vector warping function

spl.int

use spline interpolation (default F)

References

Srivastava, A., Wu, W., Kurtek, S., Klassen, E., Marron, J. S., May 2011. Registration of functional data using fisher-rao metric, arXiv:1103.3817v2.

Tucker, J. D., Wu, W., Srivastava, A., Generative Models for Function Data using Phase and Amplitude Separation, Computational Statistics and Data Analysis (2012), 10.1016/j.csda.2012.12.001.

Examples

q <- f_to_srvf(simu_data$f, simu_data$time)
qnew <- warp_q_gamma(q[, 1], simu_data$time, seq(0, 1, length.out = 101))