daewr: DefScreen – R documentation

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DefScreen

Definitive Screening Designs

Description

Recalls Jones and Nachtsheim's Definitive screening designs for 3-level factors and 3-level factors with added 2-level categorical factors.

Usage

DefScreen(m, c=0, center=0, randomize=FALSE)

Arguments

`m`	input- an integer, the m=number of 3-level factors
`c`	input- an integer, the m=number of 2-level categorical factors, default is zero if not supplied
`center`	input- an integer, the number of extra center points. This must be zero when c>0
`randomize`	input - logical

Value

a data frame containing the definitive screening design with 3-level factors first followed by 2-level factors.

Author(s)

John Lawson

References

Jones, B. and Nachtsheim, C. J. (2011) "A Class of Three Level Designs for Definitive Screening in the Presence of Second-Order Effects", Journal of Quality Technology, Vol 43, No. 1, 2011, pp 1-15. Jones, B. and Nachtsheim, C. J. (2013) "Definitive Screening Designs with Added Two-Level Categorical Factors", Journal of Quality Technology, Vol 44, No. 2, 2013, pp. 121-129.

Examples

DefScreen(m=8,c=2)
DefScreen(12)
DefScreen(m=4,c=4, randomize=TRUE)

daewr

Design and Analysis of Experiments with R

v1.2-7

GPL-2

Authors

John Lawson [aut, cre], Gerhard Krennrich [aut]

Initial release

2021-2-18