Multivariate functional principal components analysis (MFPCA) performed on an object of class mfd. It is a wrapper to fda::pca.fd, providing some additional arguments.

pca_mfd(mfdobj, scale = TRUE, nharm = 20)

Arguments

mfdobj

A multivariate functional data object of class mfd.

scale

If TRUE, it scales data before doing MFPCA using scale_mfd. Default is TRUE.

nharm

Number of multivariate functional principal components to be calculated. Default is 20.

Value

Modified pca.fd object, with multivariate functional principal component scores summed over variables (fda::pca.fd returns an array of scores when providing a multivariate functional data object). Moreover, the multivariate functional principal components given in harmonicsare converted to the mfd class.

See also

Examples

library(funcharts)
mfdobj <- data_sim_mfd()
pca_obj <- pca_mfd(mfdobj)
plot_pca_mfd(pca_obj)