https://github.com/cran/pracma
Tip revision: 71455748623ef69836470c75c5f9384f6e872d45 authored by HwB on 28 June 2011, 00:00:00 UTC
version 0.6-3
version 0.6-3
Tip revision: 7145574
vander.R
###
### VANDER.R Vandermonde matrix
###
vander <- function(x) {
n <- length(x)
if (n == 0) return(matrix(0, nrow=0, ncol=0))
if ((!is.numeric(x) && !is.complex(x)) || is.array(x))
stop("Argument 'x' must be a numeric or complex vector.")
A <- outer(x, seq(n-1, 0), "^")
return(A)
}