import(sp, gam, survival)
importFrom(maptools, SpatialPolygons2PolySet, map2SpatialLines, SpatialLines2PolySet)
exportPattern("^[[:alpha:]]+")
S3method(plot, modgam)
S3method(predict, gamcox)
S3method(print, gamcox)
S3method(print, modgam)
importFrom("grDevices", "gray", "rainbow")
importFrom("graphics", "axis", "contour", "lines", "mtext", "par",
             "points", "text", "title")
importFrom("stats", ".getXlevels", "AIC", "as.formula", "binomial",
             "coef", "contrasts", "delete.response", "is.empty.model",
             "lm", "loess", "loess.control", "median", "model.frame",
             "model.matrix", "pchisq", "predict", "qnorm", "pnorm", 
             "reshape", "terms", "vcov", "weighted.mean")