gam.lf: no visible global function definition for 'predict'
kdeb: no visible global function definition for 'var'
lfbas: no visible global function definition for 'basis'
lines.locfit: no visible global function definition for 'predict'
lines.locfit: no visible global function definition for 'lines'
llines.locfit: no visible global function definition for 'predict'
locfit: no visible global function definition for 'terms'
locfit: no visible global function definition for 'model.extract'
locfit.censor: no visible global function definition for 'dnorm'
locfit.censor: no visible global function definition for 'pnorm'
locfit.matrix: no visible global function definition for 'terms'
locfit.matrix: no visible global function definition for 'as.formula'
locfit.matrix: no visible global function definition for
  'model.extract'
locfit.matrix: no visible binding for global variable 'weights'
locfit.robust: no visible global function definition for 'median'
panel.locfit: no visible global function definition for 'predict'
panel.xyplot.lf: no visible global function definition for 'rug'
plot.eval: no visible global function definition for 'segments'
plot.lfeval: no visible global function definition for 'text'
plot.locfit.1d: no visible global function definition for 'lines'
plot.locfit.1d: no visible global function definition for 'rug'
plot.locfit.2d: no visible global function definition for 'contour'
plot.locfit.2d: no visible global function definition for 'image'
plot.locfit.2d: no visible global function definition for 'persp'
plot.locfit.2d: no visible global function definition for 'title'
plot.scb.1d: no visible global function definition for 'lines'
plot.scb.1d: no visible global function definition for 'abline'
plot.scb.2d : plot.tl: no visible global function definition for 'par'
plot.scb.2d : plot.tl: no visible global function definition for
  'polygon'
plot.scb.2d : plot.tl: no visible global function definition for 'axis'
plotbyfactor: no visible global function definition for 'legend'
preplot.locfit: no visible global function definition for 'model.frame'
preplot.locfit: no visible global function definition for
  'delete.response'
sjpi : dnorms: no visible global function definition for 'dnorm'
smooth.lf: no visible global function definition for 'predict'
Undefined global functions or variables:
  abline as.formula axis basis contour delete.response dnorm image
  legend lines median model.extract model.frame par persp pnorm polygon
  predict rug segments terms text title var weights
Consider adding
  importFrom("graphics", "abline", "axis", "contour", "image", "legend",
             "lines", "par", "persp", "polygon", "rug", "segments",
             "text", "title")
  importFrom("stats", "as.formula", "delete.response", "dnorm", "median",
             "model.extract", "model.frame", "pnorm", "predict", "terms",
             "var", "weights")
to your NAMESPACE file.