abind, fields, foreach, graphics, grDevices, stats
covr, ggplot2, gridExtra, reshape2, zoo, testthat
covr, fda, ggplot2 (>= 3.0.0), gridExtra, reshape2, zoo,
testthat (<= 2.0.0)
covr, fda, ggplot2 (>= 3.0.0), gridExtra, reshape2, zoo,
testthat (>= 2.0.0)
covr, fda, ggplot2 (>= 3.0.0), gridExtra, reshape2, zoo,
testthat