swh:1:snp:a4c99a50dc49f82b591f268001b320f8c3ca0041
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Tip revision: dc000f2a5f006d137f66716b086025d618bf8306 authored by John M Chambers on 14 July 2008, 00:00:00 UTC
version 1.0-5
Tip revision: dc000f2
triDiag.R
triDiag <- function(diagonal, upper, lower,
                    nrow = length(diagonal), ncol = nrow) {
    value <- diag(diagonal, nrow, ncol)
    R <- row(value)
    C <- col(value)
    value[C == R + 1] <- upper
    value[C == R - 1] <- lower
    value
}
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