exportPattern("^[[:alpha:]]+")    

 importFrom(RColorBrewer, brewer.pal)
 importFrom(Hmisc, capitalize)
 importFrom(reshape2, dcast)
 importFrom(classInt, classIntervals, findColours, findCols)
 importFrom(sp, spplot)
 importFrom(quantreg, rq)
 importFrom(colorspace, sequential_hcl)
 import(survey, lattice, maptools)
 