Penalized Elastic Pairwise Alignment — elastic.pair.penalized • fdars

Aligns curve f2 to curve f1 using elastic alignment with a configurable roughness penalty on the warping function.

Usage

elastic.pair.penalized(
  f1,
  f2,
  argvals = NULL,
  penalty = c("first_order", "second_order", "combined"),
  lambda = 1
)

Arguments

f1: Numeric vector (reference curve).
f2: Numeric vector (curve to align).
argvals: Numeric vector of evaluation points. If NULL, defaults to seq(0, 1, length.out = length(f1)).
penalty: Character: penalty type. One of "first_order", "second_order", or "combined".
lambda: Numeric penalty weight (default 1.0).

Value

A list with components:

gamma: Warping function
f.aligned: Aligned version of f2
distance: Elastic distance after alignment

See also

elastic.pair, elastic.lambda.cv

Examples

# \donttest{
t <- seq(0, 1, length.out = 50)
f1 <- sin(2 * pi * t)
f2 <- sin(2 * pi * t^1.5)
res <- elastic.pair.penalized(f1, f2, argvals = t)
# }