Description Usage Arguments Details Value Author(s) Examples
View source: R/makeOrthProjectors.R
Construct a list of orthogonal projector matrices corresponding to all strata of the experiment.
1  makeOrthProjectors(BlkDesList)

BlkDesList 
a list of block design matrices generated by

The strata decomposition is performed within this function. The first step
is to convert the list of block design matrices generated by
makeBlkDesMat
to projection matrices using
projMat
. The second step is to use these projection matrices
to project the raw data vector from one stratum to next stratum of the
experiment; the resulting matrix corresponds to each stratum is the
orthogonal projector matrix of the given stratum.
A list containing matrices.
Kevin Chang
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15  design1 < local({
Ani = as.factor(LETTERS[c(1,2,3,4,
5,6,7,8)])
Trt = as.factor(letters[c(1,1,1,1,
2,2,2,2)])
data.frame(Ani, Trt)
})
blk.str = "Ani"
rT = terms(as.formula(paste("~", blk.str, sep = "")), keep.order = TRUE)
blkTerm = attr(rT,"term.labels")
Z = makeBlkDesMat(design1, blkTerm)
Pb = makeOrthProjectors(Z)

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