qcc (version 2.6)

cause.and.effect: 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.

References

Montgomery, D.C. (2005) Introduction to Statistical Quality Control, 5th 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")