A quartic warplet kernel is used to construct
a warplet with parameters a,lambda,r1,r2,x.
This function is used within MRwarp.
Usage
comp(a, lambda, r1, r2, x)
Arguments
a
Center of the warplet kernel.
lambda
Intensity of the warp, should be between (-1,1).
r1
Radius on the left-hand side of the center a, such that a-r1
is the lower bound of the warping domain.
r2
Radius on the right-hand side of the center a, such that a+r2
is the upper bound of the warping domain.
x
Time point where to evaluate the warplet.
Value
The vector of warped time points.
References
See the papers: Slaets, Claeskens and Silverman (2010). Warping functional data in R and C via a Bayesian Multiresolution approach. Journal of Statistical Software, 55(3), 1-22,
URL http://www.jstatsoft.org/v55/i03/.
Claeskens, Silverman and Slaets (2010). A multiresolution approach to time warping
achievec by a Bayesian prior-posterior transfer fitting strategy. Journal of the Royal
Statistical Society, Series B, 72(5), 673-694.