plot.mfpca_vd: Plot method for variable domain multivariate FPCA

In VDPO: Working with and Analyzing Functional Data of Varying Lengths

Plot method for variable domain multivariate FPCA

Description

Displays either the estimated eigenfunctions of one variable at several fixed domain lengths (superimposed lines) or the multivariate scores colored by domain length.

Usage

## S3 method for class 'mfpca_vd'
plot(
  x,
  type = c("eigenfunctions", "heatmap", "scores"),
  variable = 1,
  components = 1:2,
  domains = NULL,
  align_sign = TRUE,
  ...
)

Arguments

x	An object of class mfpca_vd.
type	One of "eigenfunctions" (the default), "heatmap" or "scores". "eigenfunctions" draws the chosen components at a few fixed domains as superimposed lines, "heatmap" shows one component across all domains, and "scores" plots the multivariate scores colored by domain length.
variable	Index of the functional variable to display when type = "eigenfunctions" or type = "heatmap" (default 1).
components	Indices of the components to display (default 1:2). For type = "heatmap" only the first one is used.
domains	Domain lengths at which to draw the eigenfunctions. If NULL, a few values spanning the observed domains are used.
align_sign	If TRUE (the default), the sign of each eigenfunction is aligned across domains so the curves overlay consistently.
...	Further graphical arguments.

Value

Called for its side effect (a plot). Invisibly returns NULL.

VDPO documentation built on June 7, 2026, 9:08 a.m.