none() is an evaluation structure for locfit.raw(),
specifying no evaluation points. Only the initial parametric fit is
computed - this is the easiest and most efficient way to coerce
Locfit into producing a parametric regression fit.
# NOT RUN {data(ethanol, package="locfit")
# fit a fourth degree polynomial using locfitfit <- locfit(NOx~E,data=ethanol,deg=4,ev=none())
plot(fit,get.data=TRUE)
# }