IsEuclid | R Documentation |
Confirmation of the Euclidean nature of a distance matrix by the Gower's theorem.
IsEuclid
is used in summary.dist
.
IsEuclid(distmat, plot = FALSE, print = FALSE, tol = 1e-07)
distmat |
an object of class 'dist' |
plot |
a logical value indicating whether the eigenvalues bar plot of the matrix of the term |
print |
a logical value indicating whether the eigenvalues of the matrix of the term |
tol |
a tolerance threshold : an eigenvalue is considered positive if it is larger than |
returns a logical value indicating if all the eigenvalues are positive or equal to zero
Daniel Chessel
Stephane Dray dray@biomserv.univ-lyon1.fr
Gower, J.C. and Legendre, P. (1986) Metric and Euclidean properties of dissimilarity coefficients. Journal of Classification, 3, 5–48.
w <- matrix(runif(10000), 100, 100)
w <- dist(w)
summary(w)
IsEuclid (w) # TRUE
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.