ss.ceDiag {SixSigma}

Cause and Effect Diagram

Description

Represents a Cause and Effect Diagram by cause group.

Usage

ss.ceDiag(
  effect,
  causes.gr,
  causes,
  main = "Six Sigma Cause-and-effect Diagram",
  sub,
  ss.col = c("#666666", "#BBBBBB", "#CCCCCC", "#DDDDDD", "#EEEEEE", "#FFFFFF", "#000000",
    "#000000")
)

Arguments

effect

A short character string that represents the effect we want to analyse.

causes.gr

A vector of characters that represents the causes groups.

causes

A vector with lists that represents the individual causes for each

main

Main title for the diagram

sub

Subtitle for the diagram (recommended the Six Sigma project name)

ss.col

A vector of colors for a personalized drawing. At least five colors, sorted by descendant intensity

Details

The default value for ss.col is c("#666666", "#BBBBBB", "#CCCCCC", "#DDDDDD", "#EEEEEE", "#FFFFFF", "#000000", "#000000"), a grayscale style. You can pass any accepted colour string.

Value

A drawing of the causes and effect with "fish-bone" shape

Note

The cause and effect diagram is also known as "Ishikawa diagram", and has been widely used in Quality Management. It is one of the Seven Basic Tools of Quality.

Author(s)

EL Cano

References

Cano, Emilio L., Moguerza, Javier M. and Redchuk, Andres. 2012. Six Sigma with R. Statistical Engineering for Process Improvement, Use R!, vol. 36. Springer, New York. https://link.springer.com/book/10.1007/978-1-4614-3652-2.

Wikipedia, https://en.wikipedia.org/wiki/Ishikawa_diagram

See Also

ss.pMap

Examples

effect <- "Flight Time"
causes.gr <- c("Operator", "Environment", "Tools", "Design", 
  "Raw.Material", "Measure.Tool")
causes <- vector(mode = "list", length = length(causes.gr))
causes[1] <- list(c("operator #1", "operator #2", "operator #3"))
causes[2] <- list(c("height", "cleaning"))
causes[3] <- list(c("scissors", "tape"))
causes[4] <- list(c("rotor.length", "rotor.width2", "paperclip"))
causes[5] <- list(c("thickness", "marks"))
causes[6] <- list(c("calibrate", "model"))
ss.ceDiag(effect, causes.gr, causes, sub = "Paper Helicopter Project")