R: Warp SRSF

warp_q_gamma {fdasrvf}

R Documentation

Warp SRSF

Description

This function warps srsf q by γ

Usage

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

Arguments

`q`	vector
`time`	time
`gamma`	vector warping function
`spl.int`	use spline interpolation (default F)

Value

qnew warped function

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 [math.ST].

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

data("simu_data")
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))

[Package fdasrvf version 1.9.7 Index]