colorRamps, data.table, ggplot2 (>= 2.2.0), grDevices, Hmisc,
reshape2, scales, stats, stringr, utils
colorRamps, data.table, factoextra, FactoMineR, ggplot2 (>=
2.2.0), grDevices, Hmisc, reshape2, scales, stats, stringr,
utils