exportPattern("^[[:alpha:]]+")
importFrom(fields, rdist, rdist.earth)
importFrom(Matrix, determinant, spMatrix)
importFrom(rARPACK, eigs_sym)
importFrom(vegan, spantree)
importFrom(spdep, nb2listw, knearneigh, knn2nb, tri2nb, poly2nb)
importFrom(parallel, makeCluster, detectCores, stopCluster)
importFrom(doParallel, registerDoParallel)
importFrom(foreach, foreach, "%dopar%")
import(ggplot2)
import(methods)
importFrom("stats", "median", "cor", "kmeans", "lm", "logLik",
             "predict", "pt", "residuals", "sd", "approx",
           "density", "quantile", "rnorm", "optim", "pnorm",
           "optimize")
importFrom("Matrix", "sparse.model.matrix")
importFrom("graphics", "plot")