1 | vech(A)
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A |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | ##---- Should be DIRECTLY executable !! ----
##-- ==> Define data, use random,
##-- or do help(data=index) for the standard data sets.
## The function is currently defined as
function (A)
{
l = 0
p = nrow(A)
ps = p * (p + 1)/2
vA = matrix(0, ps, 1)
for (i in 1:p) {
for (j in i:p) {
l = l + 1
vA[l, 1] = A[j, i]
}
}
return(vA)
}
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