Nothing
require(PFIM)
con <- file(system.file(package="PFIM", "Examples", "Example_5", "matelem.tmp"), open="r")
prot <- popProt$new(prots=readMatElem(con))
close(con)
prot$freq() # initialized to single protocol with maximum determinant
which(as.logical(prot$freq())) # 1-based index of protocol with maximum determinant
prot$props() # another way of getting the same
op <- options(digits=3) # more concise printing of numeric values
prot$Fim() # Fisher Information matrix for these (trivial) proportions
prot$LMat() # Cholesky factor of the FIM
options(op) # restore the previous value
all.equal(tcrossprod(prot$LMat()), prot$Fim()) # check that LL' = F
prot$ldet() # log-determinant of the FIM
2 * log(prod(diag(prot$LMat()))) # another way of calculating the log-determinant of FIM
prot$ajout() # try to add another individual protocol but no other improves it
unzip(system.file(package="PFIM", "Examples", "ECo", "matelem1.zip"), "matelem1.tmp")
con <- file("matelem1.tmp", open="r")
prot <- popProt$new(prots=readMatElem(con))
close(con)
unlink("matelem1.tmp")
which(as.logical(prot$freq())) # 1-based index of protocol with maximum determinant
prot$ldet() # logarithm of that determinant
while (prot$ajout() && length(prot$props()) < 100L) {} # add up to 99 protocols
op <- options(digits=3)
rev(sort(prot$props())) # combination (decreasing coefficients)
prot$Fim() # Fisher Information matrix
options(op)
prot$ldet() # log-determinant for FIM with 100 non-zeros
q('no')
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