import(splines)
import(quantreg)

importFrom("graphics", "axis", "matlines", "matplot", "matpoints",
             "plot", "text","points", "abline", "par", "segments", "smoothScatter")
importFrom("stats", ".getXlevels", "contrasts", "is.empty.model",
             "model.matrix", "model.response", "model.weights", "terms",
             "var","formula","qnorm","splinefun","update","printCoefmat")
importFrom("grDevices", "adjustcolor", "grey", "colorRampPalette")
importFrom("utils", "tail")

export(gcrq, gcrq.rq.cv, ncross.rq.fitX, ncross.rq.fitXB, 
      ps, summary.gcrq, print.gcrq, plot.gcrq, vcov.gcrq, predict.gcrq)

S3method(plot,gcrq)
S3method(print,gcrq)
S3method(summary,gcrq)
S3method(vcov,gcrq)
S3method(predict,gcrq)


