Description Usage Arguments Value References
View source: R/measures_for_abundance_matrices.R
Calculates chi-square distances for all pairs of species in a community matrix. In particular, the abundance data are chi-square-transformed, and then used for calcluation of Euclidean distances. Note: Before the calculation, species (rows) with zero occurrences, and sites (columns) with zero species are removed from m.
1 | CA_chi(m)
|
m |
Community data matrix with species as rows and sites as columns. Can contain either incidences (1/0) or abundances (natural numbers). |
A dist object with the pairwise values.
Legendre P. & De Caceres M. (2013) Beta diversity as the variance of community data: dissimilarity coefficients and partitioning. Ecology Letters 16: 951-963.
Legendre P. & Legendre L. (2012) Numerical Ecology. Elsevier. pp 265-335.
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