scatter.smooth {modreg}

R Documentation

Scatter Plot with Smooth Curve Fitted by Loess

Description

Plot and add a smooth curve computed by loess to a scatter plot.

Usage

scatter.smooth(x, y, span = 2/3, degree = 1,
    family = c("symmetric", "gaussian"),
    xlab = deparse(substitute(x)), ylab = deparse(substitute(y)),
    ylim = range(y, prediction$y), evaluation = 50, ...)
loess.smooth(x, y, span = 2/3, degree = 1,
    family = c("symmetric", "gaussian"), evaluation=50, ...)

Arguments

x	x coordinates for scatter plot.
y	y coordinates for scatter plot.
span	smoothness parameter for loess.
degree	degree of local polynomial used.
family	if "gaussian" fitting is by least-squares, and if family="symmetric" a re-descending M estimator is used.
xlab	label for x axis.
ylab	label for y axis.
ylim	the y limits of the plot.
evaluation	number of points at which to evaluate the smooth curve.
...	graphical parameters.

Details

loess.smooth is an auxiliary function.

Value

None.

Author(s)

B.D. Ripley

See Also

loess

Examples

data(cars)
attach(cars)
scatter.smooth(speed, dist)
detach()