utilities: Utility functions for DoE packages, not intended for direct use
Description
Utility functions for DoE packages, not intended for direct useUsage
make.generators(name, liste)
make.formulas(orignames, factor.names)
des.recode(var, recodes, as.factor.result, char)
Letters
Value
- The functions are not intended for direct use.
Details
The functions are not intended for direct use.
The constant Letters
is the vector of all capital and lower case
letters of the Roman alphabet except I
and i
.
It is used for default factor names and has been obtained as
Letters <- c(LETTERS[-9],letters[-9])
.References
Hedayat, A.S., Sloane, N.J.A. and Stufken, J. (1999) Orthogonal Arrays: Theory and Applications, Springer, New York.