panel.car {car}

Panel Function for Coplots

Description

a panel function for use with coplot that plots points, a lowess line, and a regression line.

Usage

panel.car(x, y, col, pch, cex=1, span=0.5, lwd=2, 
  reg.line=lm, lowess.line=TRUE, ...)

Arguments

x

vector giving horizontal coordinates.

y

vector giving vertical coordinates.

col

point color.

pch

plotting character for points.

cex

character expansion factor for points.

span

span for lowess smoother.

lwd

line width, default is 2.

reg.line

function to compute coefficients of regression line, or FALSE for no line.

lowess.line

if TRUE plot lowess smooth.

...

other arguments to pass to functions lines and regLine.

Value

NULL. This function is used for its side effect: producing a panel in a coplot.

Author(s)

John Fox [e-mail]

See Also

coplot, regLine

Examples

coplot(prestige ~ income|education, panel=panel.car, 
  col="red", data=Prestige)