swh:1:snp:a4c99a50dc49f82b591f268001b320f8c3ca0041
Tip revision: ce60f670aac0a708d3a9af5f0cf46a752d46ba8a authored by John M Chambers on 28 October 2020, 07:59:48 UTC
version 1.0-6.1
version 1.0-6.1
Tip revision: ce60f67
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
}