color.plot.loess {mining}R Documentation

Contour plot of a regression surface

Usage

color.plot.loess(object,data,res=50,fill=F,add=fill,clip=T,...)

Arguments

object a loess object.
data data to use instead of model.frame(object).
res resolution of the sampling grid in each direction.
fill passed to contour.plot.
add If TRUE, the contours are added to an existing plot. Otherwise a new plot is created.
clip a polygon over which the surface is to be defined. Possible values are FALSE (no clipping), TRUE (clip to the convex hull of the data), or a matrix with two columns specifying (x,y) coordinates.
... extra arguments to color.plot.data.frame

.

Details

The regression surface is evaluated at all points on a grid, clipped values are set to NA, and contour.plot is used to plot the contours.

If add=FALSE, the data is plotted on top using color.plot.data.frame.

Value

A plot is produced.

Author(s)

Tom Minka

See Also

contour.plot

Examples

data(Housing)
fit = loess(Price ~ Rooms + Low.Status, Housing)
color.plot(fit)
[Package Contents]