disc {ade4} | R Documentation |
Calculates the root square of Rao's dissimilarity coefficient between samples.
disc(samples, dis = NULL, structures = NULL)
samples |
a data frame with elements as rows, samples as columns, and abundance, presence-absence or frequencies as entries |
dis |
an object of class |
structures |
a data frame containing, in the jth row and the kth column, the name of the group of level k to which the jth population belongs. |
Returns a list of objects of class dist
Sandrine Pavoine pavoine@mnhn.fr
Rao, C.R. (1982) Diversity and dissimilarity coefficients: a unified approach. Theoretical Population Biology, 21, 24–43.
data(humDNAm) humDNA.dist <- disc(humDNAm$samples, sqrt(humDNAm$distances), humDNAm$structures) humDNA.dist is.euclid(humDNA.dist$samples) is.euclid(humDNA.dist$regions) ## Not run: data(ecomor) dtaxo <- dist.taxo(ecomor$taxo) ecomor.dist <- disc(ecomor$habitat, dtaxo) ecomor.dist is.euclid(ecomor.dist) ## End(Not run)