qualityTools (version 1.0)

effectPlot: effectPlot

Description

Display effects of an object of class 'facDesign' in a line plot.

Usage

effectPlot(fdo, main = paste("Main Effect Plot for ", deparse(substitute(fdo))), showPoints = FALSE, ylab = NULL, pch = 15, ...)

Arguments

fdo

an object of class facDesign

showPoints

logical. If TRUE, single observations are displayed as well.

main

main

ylab

ylab

pch

pch

...

further graphical parameters

Value

• none

Details

effectPlot displays effects for an object of class facDesign (i.e. 2^k full or 2^k-p fractional factorial design).

See Also

factors, fracDesign

Examples

vp = fracDesign(k = 3, replicates = 2)  #NA in response column and 2 replicates per factor combination
y = 4*vp[,1] -7*vp[,2] + 2*vp[,2]*vp[,1] + 0.2*vp[,3] + rnorm(16)                #generate some data
response(vp) = y
effectPlot(vp)                         #show effects and interactions (nothing significant expected)