importFrom("graphics", "abline", "arrows", "axis", "box", "contour", "image", "lines", "locator", "par", "plot", "polygon", "rect", "segments", "strheight", "strwidth", "symbols", "text")

importFrom("ggplot2", "autoplot", "fortify", "aes", "aes_string", "geom_tile", "ggplot", "scale_x_continuous", "scale_y_continuous", "geom_raster", "geom_contour", "coord_quickmap", "coord_map", "scale_fill_gradientn", "scale_colour_gradientn")

importFrom("gdistance", "costDistance", "shortestPath", "geoCorrection", "transition")

importFrom(graphics, abline, par, plot, lines)

importFrom("graphics", "barplot", "bxp", "strheight","strwidth", "segments")
importFrom("graphics", "abline", "arrows", "Axis", "axis", "boxplot",
"hist", "legend", "lines", "mtext", "par", "plot", "points", "polygon",
"rect", "symbols", "text", "title", "contour", ".filled.contour")
importFrom("stats", "dbinom", "dpois", "formula", "ppois", "qpois", "as.formula", "cor", "lm",
"cov", "density", "rgamma", "rexp", "model.frame", "model.matrix",
"pnorm", "qnorm", "quantile", "rnorm", "runmed",
export(mastif, mastMap, mastPlot, mastSim, mastFillCensus, mastClimate, mastPriors)

importFrom("stats", "dbinom", "dpois", "ppois", "qpois", "as.formula", "cor", "lm",

#  package BIOM.utils is a strict dependency, declared in "Depends:"
#  also (this is a separate point) methods for class "biom" are used throughout,
#  so it makes sense to import the entire package namespace.
#  package MGRASTer ought not to be considered a dependency, perhaps, yet is declared in "Depends:"
#  because its environment seems to fail if not loaded this way.  nonetheless, the
#  following namespace import might reasonably be removed, in favor of explicit references.
#  all other packages are optional, each providing specific and limited analysis functionality.
#  we adopt the approach described in this remark from the (forthcoming) R-ext manual:
#    "If the intention is to give an error
#    if the suggested package is not available,
#  the following are exceptions, because the matR package namespace depends on them:
importFrom("graphics", "abline", "close.screen", "grid", "plot",
importFrom("stats", "anova", "aov", "kruskal.test", "sd", "t.test",