exportPattern("^[[:alpha:]]+")
import(raster)
import(rgdal)
importFrom(geosphere, bearing)
importFrom(geosphere, distHaversine)
importFrom(foreach, "%dopar%")
importFrom(foreach, foreach)
importFrom(foreach, registerDoSEQ)
importFrom(data.table, rbindlist)
importFrom(data.table, setkey)
importFrom(parallel, makeCluster)
importFrom(parallel, stopCluster)
importFrom(doParallel, registerDoParallel)
importFrom(spatial.tools, getValuesBlock_stackfix)