The function generates the design matrix provided the number of 2levels design factors and defining relations.
1  ffDesMatrix(k, gen = NULL)

k 
numeric. The number of 2levels design factors in the designs. 
gen 
list. If 
A defining relation is declared by a vector where the first entry
corresponds to the left hand side (LHS) of the defining
equation. For example, if k=5
, and gen=list(c(5,1,2,3,4))
,
then the defining equation is 5=1*2*3*4. A full 2levels (1,1)
factorial design is generated. For each defining relation the LHS column
is replaced by the corresponding columns product. At the end repeated
runs are removed from the matrix.
The function returns a 2levels design matrix with k
columns.
Ernesto Barrios
conf.design
of the
conf.design package,
FrF2
from the FrF2 package.
1 2 3  ffDesMatrix(5) # Full 2^5 factorial design
ffDesMatrix(5,gen=list(c(5,1,2,3,4))) # 2^(51) factorial design
ffDesMatrix(5,gen=list(c(4,1,2),c(5,1,3))) # 2^(52) factorial design

Questions? Problems? Suggestions? Tweet to @rdrrHQ or email at ian@mutexlabs.com.
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