class.ind {nnet} | R Documentation |
Generates a class indicator function from a given factor.
class.ind(cl)
cl |
factor or vector of classes for cases. |
a matrix which is zero except for the column corresponding to the class.
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.
# The function is currently defined as class.ind <- function(cl) { n <- length(cl) cl <- as.factor(cl) x <- matrix(0, n, length(levels(cl)) ) x[(1:n) + n*(unclass(cl)-1)] <- 1 dimnames(x) <- list(names(cl), levels(cl)) x }