IAcontrastsCMAT {BSagri} | R Documentation |
Interaction contrasts for a two-factorial design
Description
Builds a family of intercation contrasts for complete two-factorial designs.
Usage
IAcontrastsCMAT(CMAT1, CMAT2)
Arguments
CMAT1 |
a (named) contrast matrix |
CMAT2 |
a (named) contrast matrix |
Details
Builds the kronecker product of CMAT1
and CMAT2
and creates suitable columnnames.
Note that CMAt1
and CMAT2
are not checked, and hence its up to the user to define them suitably.
Value
A matrix with k[1]*k[2] columns.
See Also
for interaction contrasts based on contrast definition and the number of levels of the factors in atwo-way layout, see IAcontrasts
;
two possibilities to specify appropriate rownames are implemented in function c2compnames
Examples
library(multcomp)
n1<-c(10,10,10,10)
names(n1)<-c("A","B","C","D")
n2<-c(3,3,3)
names(n2)<-c(1,2,3)
CMT1<-contrMat(n1, type="Tukey")
CMT2<-contrMat(n2, type="Tukey")
IAC<-IAcontrastsCMAT(CMAT1=CMT1, CMAT2=CMT2)
c2compnames(IAC, ntype="sequ")
###
n1<-c(10,10,10,10)
names(n1)<-c("A","B","C","D")
n2<-c(3,3,3)
names(n2)<-c(1,2,3)
CMD1<-contrMat(n1, type="Dunnett")
CMD2<-contrMat(n2, type="Dunnett")
IAC<-IAcontrastsCMAT(CMAT1=CMD1, CMAT2=CMD2)
c2compnames(IAC, ntype="sequ")
[Package BSagri version 0.1-10 Index]