[R-sig-phylo] bug in nj example
Eric Collins
rec3141 at mcmaster.ca
Wed Nov 2 16:40:29 CET 2011
the matrix in the example is not symmetric, which affects the results
because the C code only uses the upper right triangle, which is wrong
in the example below.
x <- c(7, 8, 11, 13, 16, 13, 17, 5, 8, 10, 13,
10, 14, 5, 7, 10, 7, 11, 8, 11, 8, 12,
5, 6, 10, 9, 13, 8)
M <- matrix(0, 8, 8)
M[row(M) > col(M)] <- x
M[row(M) < col(M)] <- x
to fix:
x <- c(7, 8, 11, 13, 16, 13, 17, 5, 8, 10, 13,
10, 14, 5, 7, 10, 7, 11, 8, 11, 8, 12,
5, 6, 10, 9, 13, 8)
M <- matrix(0, 8, 8)
M[row(M) > col(M)] <- x
M <- t(M)
cheers,
Eric
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