importFrom("gstat", "idw")
importFrom("gstat", "krige")
importFrom("sp", "plot")
exportPattern("^[[:alpha:]]+")
export(
    "as.SpatialGrid",
    "changeproj",
    "export",
    "idw",
    "kde",
    "krige",
    "print",
    "rings",
    "summary" 
    )
exportMethods(show,plot)
exportClasses("prevR")
