utilities {DoE.base} | R Documentation |
Utility functions for DoE packages, not intended for direct use
make.generators(name, liste) make.formulas(orignames, factor.names) des.recode(var, recodes, as.factor.result, char) Letters
name |
... |
liste |
... |
orignames |
... |
factor.names |
... |
var |
variable |
recodes |
character string specifying recodes, so far only used in the principal form “-1=level[1];1=level[2]” |
as.factor.result |
logical that specifies whether or not results are to be coerced to factor. The default is that factors are coerced to factor, while numeric variables with numeric recodes are kept numeric. |
char |
logical: should replacement be treated as character string (TRUE) or evaluated? default is FALSE |
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])
.
The functions are not intended for direct use.
This package is currently under intensive development. Substantial changes are to be expected in the near future.
Ulrike Groemping
Hedayat, A.S., Sloane, N.J.A. and Stufken, J. (1999) Orthogonal Arrays: Theory and Applications, Springer, New York.
See Also FrF2-package
, DoE.wrapper-package
## default factor names for most design generating functions ## (some quantitative designs have other default factor names) ## for up to 50 factors Letters