exportPattern("^[[:alpha:]]+")
import(gstat, genalg, MASS, plyr)
importFrom(sp, 	rbind.SpatialPoints,
	rbind.SpatialPointsDataFrame, 
	rbind.SpatialPixels,
	rbind.SpatialPixelsDataFrame,
	rbind.SpatialPolygons,
	rbind.SpatialPolygonsDataFrame,
	rbind.SpatialLines,
	rbind.SpatialLinesDataFrame,
        coordinates, "coordinates<-", "gridded<-", spplot, spsample, bbox, plot)
importFrom(minqa, bobyqa, uobyqa)
importFrom(MASS, ginv)
importFrom(fields, rdist)
importFrom(gsl, expint_E1)
importFrom(TeachingDemos, spread.labs)
importFrom(sgeostat, which.na)
importFrom("grDevices", "boxplot.stats", "heat.colors", "recordPlot")
importFrom("stats", "cor", "delete.response", "median", "model.extract", "model.frame", "model.matrix", "na.omit", "optimize", "predict", "terms")
importFrom("methods", "as")
importFrom("graphics", "abline", "box", "boxplot", "identify", "par", "points", "segments", "strheight", "strwidth", "text", "legend")
importFrom("utils", "setTxtProgressBar", "txtProgressBar")
