search for: ishuffle

I would like to randomly shuffle a distance object, such as the one created by ade4{dist.binary} below. My first attempt, using sample(jc.dist) creates a shuffled vector, losing the lower triangular structure of the distance object. How can I Ishuffle the lower triangular part of a distance matrix without losing the structure? Thanks. --Dale x1 <- c(rep(0,4),1) x2 <- c(rep(0,2),rep(1,3)) x3 <- c(rep(1,3), rep(0,2)) X <- rbind(x1,x2,x3) X X <- as.data.frame(X) library(ade4) jc.dist? <- dist.binary(X, method=1) sample(jc.dist)