mgcv (version 1.9-4)

FFdes: Level 5 fractional factorial designs

Description

Computes level 5 fractional factorial designs for up to 120 factors using the agorithm of Sanchez and Sanchez (2005), and optionally central composite designs.

Usage

FFdes(size=5,ccd=FALSE)

Details

Basically a translation of the code provided in the appendix of Sanchez and Sanchez (2005).

References

Sanchez, S. M. & Sanchez, P. J. (2005) Very large fractional factorial and central composite designs. ACM Transactions on Modeling and Computer Simulation. 15: 362-377

Examples

  require(mgcv)
  plot(rbind(0,FFdes(2,TRUE)),xlab="x",ylab="y",
       col=c(2,1,1,1,1,4,4,4,4),pch=19,main="CCD")
  FFdes(5)
  FFdes(5,TRUE)