An S4 Class for Functional Data

S4 classes for univariate and multivariate functional data with utility functions. See for a detailed description of the package functionalities and its interplay with the MFPCA package for multivariate functional principal component analysis < https://CRAN.R-project.org/package=MFPCA>.

funData

funData is an R-package that allows users to easily handle functional data. The data is stored in an object-oriented manner using S4 classes and methods.

Highlights

funData provides a unified framework for different types of functional data:

Univariate and multivariate data
Regularly and irregularly sampled data
Data with one-, two- (images) and even higher-dimensional domains

Important functionalities include:

Displaying, Plotting, including an interface to ggplot2
Subsetting (samples, domain)
Basic arithmetics and averaging
Integration over the domain
A fully integrated simulation toolbox

Installation

The funData package is available on CRAN. To install the latest version directly from Github, please use devtools::install_github("ClaraHapp/funData") (install devtools before).

Dependencies

The funData package depends on the R-packages fields, foreach, abind and methods.

References

The functionalities of the funData package and its interplay with the MFPCA package for multivariate functional principal component analysis are described in:

C. Happ-Kurz (2020): Object-Oriented Software for Functional Data. Journal of Statistical Software, 93(5): 1-38 .