ade4 (version 1.7-15)

quasieuclid: Transformation of a distance matrice to a Euclidean one

Description

transforms a distance matrix in a Euclidean one.

Usage

quasieuclid(distmat)

Arguments

distmat

an object of class dist

Value

object of class dist containing a Euclidean distance matrice

Details

The function creates a distance matrice with the positive eigenvalues of the Euclidean representation. Only for Euclidean distances which are not Euclidean for numeric approximations (for examples, in papers as the following example).

Examples

Run this code
# NOT RUN {
data(yanomama)
geo <- as.dist(yanomama$geo)
is.euclid(geo) # FALSE
geo1 <- quasieuclid(geo)
is.euclid(geo1) # TRUE
par(mfrow = c(2,2))
lapply(yanomama, function(x) plot(as.dist(x), quasieuclid(as.dist(x))))

par(mfrow = c(1,1))
# }

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