cause.and.effect {qcc}R Documentation

Cause and effect diagram

Description

Draw a basic cause and effect diagram.

Usage

cause.and.effect(cause, effect, title = "Cause-and-Effect diagram", 
                 cex = c(1, 0.9, 1), font = c(1, 3, 2))

Arguments

cause a list of causes and branches providing descriptive labels (see the example below).
effect a string label or the effect.
title a string specifying the main title to appear on the plot.
cex a vector of values for the graphical character expansion. The values refer, in order, to branches, causes and effect.
font a vector of values for the font to use. The values refer, in order, to branches, causes and effect.

Author(s)

Luca Scrucca luca@stat.unipg.it

References

Montgomery, D.C. (2000) Introduction to Statistical Quality Control, 4th ed. New York: John Wiley & Sons.
Wetherill, G.B. and Brown, D.W. (1991) Statistical Process Control. New York: Chapman & Hall.

Examples

cause.and.effect(cause=list(Measurements=c("Micrometers", "Microscopes", "Inspectors"),
                            Materials=c("Alloys", "Lubricants", "Suppliers"),
                            Personnel=c("Shofts", "Supervisors", "Training", "Operators"),
                            Environment=c("Condensation", "Moisture"),
                            Methods=c("Brake", "Engager", "Angle"),
                            Machines=c("Speed", "Lathes", "Bits", "Sockets")),
                 effect="Surface Flaws")
[Package qcc version 1.2 Index]