Routledge Measures
index_routledge1(x, ...)index_routledge2(x, ...)
index_routledge3(x, ...)
# S4 method for matrix
index_routledge1(x)
# S4 method for matrix
index_routledge2(x)
# S4 method for matrix
index_routledge3(x)
A numeric vector.
A \(m \times p\) numeric matrix of count data
(absolute frequencies, i.e. a contingency table).
Currently not used.
N. Frerebeau
This assumes that the order of the matrix rows (from \(1\) to \(n\)) follows the progression along the gradient/transect.
Data are standardized on a presence/absence scale (\(0\)/\(1\)) beforehand.
Routledge, R. D. (1977). On Whittaker's Components of Diversity. Ecology, 58(5), 1120-1127. tools:::Rd_expr_doi("10.2307/1936932").
Other beta diversity measures:
index_binomial(),
index_brainerd(),
index_bray(),
index_cody(),
index_jaccard(),
index_morisita(),
index_sorensen(),
index_whittaker(),
index_wilson()