import(splines)
import(quantreg)

importFrom("graphics", "axis", "matlines", "matplot", "matpoints",
             "plot", "text")
importFrom("stats", ".getXlevels", "contrasts", "is.empty.model",
             "model.matrix", "model.response", "model.weights", "terms",
             "var")
export(gcrq, gcrq.rq.cv, ncross.rq.fitX, ncross.rq.fitXB, 
      ps, predictQR, summary.gcrq, print.gcrq, plot.gcrq, vcov.gcrq)

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



