How to create a fractional factorial design in R?

Question

I\'m struggling to create a rather elaborate fractional factorial design using R.

(see http://en.wikipedia.org/wiki/Fractional_factorial_design)

I\'ve searched

Answer 1

The D, A, I, G-optimal designs are all bounded designs(the designs are on the bounds of design space), I don't think the optimal design results are good at fitting response surface or surrogate model. Meanwhile, the optimal design is usually not orthogonal.