lubridate, classInt, reshape2, rgdal, plotKML
lubridate, classInt, reshape2, rgdal, plotKML, MASS, sp,
maptools, RColorBrewer
foreign, formattable, openxlsx, ggplot2, grid, lubridate,
htmltools, plyr
openxlsx, ggplot2, grid, lubridate, plyr, scales, tidyr,
dplyr, stats