exportPattern("^[[:alpha:]]+")
importFrom(Hmisc, approxExtrap)
importFrom(munsellinterpol, MunsellHVC)
importFrom(pracma, interp1, trapz, circshift)
importFrom(sp, point.in.polygon)
importFrom(stats, approx, approxfun)
importFrom(graphics, par, plot, segments)
importFrom(utils, modifyList)
