utilitiesV | R Documentation |
~~ Internal functions, mainly for generating designs without relying on a catalogue of designs ~~
revdigits(obj, ndigits = 1 + floor(log2(max(obj))))
indexcalc(obj, k = 1 + floor(log2(max(obj))))
gencalc(gen)
YatesFly(walshindex, k=NULL)
obj |
non-negative integer (vector) with Yates matrix column numbers (called Walsh indices by Sanchez and Sanchez 2005) |
ndigits |
number of binary digits; default is the necessary number for the largest element of |
k |
number of base factors; default is the minimum necessary number for the maximum of |
gen |
generators in any admissible format ( |
walshindex |
non-negative integer (vector) with Yates matrix column numbers
(called Walsh indices by Sanchez and Sanchez 2005; |
These internal functions are used for generating regular 2-level fractional factorials.
The Sanchez and Sanchez (2005) way of providing large resolution V designs
is supported, as well as manual design generation of large designs with
functions FrF2
and FrF2Large
.
revdigits
creates a matrix with 0-1 entries in an order appropriate for
creating character generators from Yates matrix column numbers,
indexcalc
calculates a named list of vectors of base column numbers,
named by the corresponding character generator,
gencalc
calculates Yates column numbers from arbitrary types of generator
representations (except for negative numbers),
YatesFly
produces an experimental plan from a vector of Yates column numbers
which have to include the base column numbers (contrary to the
generators
option in FrF2
or FrF2Large
This package is still under development, but does already provide useful and well-tested results.
Ulrike Groemping
Sanchez, S.M. and Sanchez, P.J. (2005). Very Large Fractional Factorial and Central Composite Designs. ACM Transactions on Modeling and Computer Simulation 15, 362-377.
See also FrF2Large
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