qualityTools (version 1.55)

taguchiDesign: Taguchi Designs

Description

Creates a taguchi design.

Usage

taguchiDesign(design, randomize = TRUE, replicates = 1)

Arguments

design

design needs to be one of the following characters, which specifies the orthogonal array of the taguchi design:

• “L8_2” for seven two-level factors
• “L9_3” for four three-level factors
• “L12_2” for 11 two-level factors
• “L16_2” for 16 two-level factors
• “L16_4” for 16 four-level factors
• “L18_2_3” for one two-level and seven three-level factors
• “L25_5” for six five-level factors
• “L27_3” for 13 three-level factors
• “L32_2” for 32 two-level factors
• “L32_2_4” for one two-level factor and nine four-level factors
• “L36_2_3_a” for 11 two-level factors and 12 three-level factors
• “L36_2_3_b” for three two-level factors and 13 three-level factors
• “L50_2_5” for one two-level factor and eleven five-level factors
• “L8_4_2” for one four-level factor and four two-level factors
• “L16_4_2_a” for one four-level factor and 12 two-level factors
• “L16_4_2_b” for two four-level factors and nine two-level factors
• “L16_4_2_c” for three four-level factors and six two-level factors
• “L16_4_2_d” for five four-level factors and two two-level factors
• “L18_6_3” for one six-level factors and six three-level factors

randomize

logical value (‘TRUE’/‘FALSE’) - randomizes the RunOrder of the design. By default randomize is set to ‘TRUE’.

replicates

Integer giving the number of replicates.

Value

taguchiDesign returns an object of class taguchiDesign.

Details

an overview of possible taguchi designs is possible with taguchiChoose.

References

Box, Bisgard S.G.E.P.; Fung, C. A.: An explanation and critique of taguchis contributions to quality engineering. In: Quality and Reliability Engineering International (1988)

See Also

facDesign for 2^k factorial designs rsmDesign for response surface designs fracDesign for fractional factorial design pbDesign for response surface designs gageRRDesign for gage designs http://www.r-qualitytools.org/html/Improve.html

Examples

tdo = taguchiDesign("L9_3")
values(tdo) = list(A = c("material 1","material 2","material 3"), 
                   B = c(29, 30, 35))
names(tdo) = c("Factors", "Are", "Documented", "In The Design")
response(tdo) = rnorm(9)
summary(tdo)
effectPlot(tdo)