ade4 (version 1.7-19)

apqe: Apportionment of Quadratic Entropy

Description

The hierarchical apportionment of quadratic entropy defined by Rao (1982).

Usage

apqe(samples, dis = NULL, structures)
# S3 method for apqe
print(x, full = FALSE, ...)

Value

Returns a list of class apqe

call

call

results

a data frame that contains the components of diversity.

Arguments

samples

a data frame with haplotypes (or genotypes) as rows, populations as columns and abundance or presence-absence as entries

dis

an object of class dist computed from Euclidean distance. If dis is null, equidistances are used.

structures

a data frame that contains, in the jth row and the kth column, the name of the group of level k to which the jth population belongs

x

an object of class apqe

full

a logical value that indicates whether the original data ('distances', 'samples', 'structures') should be printed

...

... further arguments passed to or from other methods

Author

Sandrine Pavoine

References

Rao, C.R. (1982) Diversity: its measurement, decomposition, apportionment and analysis. Sankhya: The Indian Journal of Statistics, A44, 1--22.

Pavoine S. and Dolédec S. (2005) The apportionment of quadratic entropy: a useful alternative for partitioning diversity in ecological data. Environmental and Ecological Statistics, 12, 125--138.

Examples

data(ecomor)
ecomor.phylog <- taxo2phylog(ecomor$taxo)
apqe(ecomor$habitat, ecomor.phylog$Wdist)