smirnov (version 1.0-1)

smirnov-package: Provides two taxonomic coefficients from E. S. Smirnov "Taxonomic analysis" (1969) book

Description

This tiny package contains one function smirnov() which calculates two scaled taxonomic coefficients, Txy (coefficient of similarity) and Txx (coefficient of originality). These two characteristics may be used for the analysis of similarities between any number of taxonomic groups, and also for assessing uniqueness of giving taxon. It is possible to use smirnov() output as a distance measure: convert it to distance by "as.dist(1 - smirnov(x))"

Details

ll{ Package: smirnov Type: Package Version: 1.0 Date: 2010-10-25 License: What license is it under? LazyLoad: yes } The input of smirnov() is any binary matrix (i.e., presence-absence matrix). The output is a matrix where diagonal is filled with Txx coefficients and other cells with Txy coefficients.

References

Smirnov E. S. 1969. Taxonomical analysis. Moscow, Moscow University Publishers. [in Russian].

Examples

# Simple example from p. 44 of Smirnov's book:
s1 <- c(1,0,1,0,0,1,1,0,0)
s2 <- c(1,0,0,1,1,0,0,1,0)
s3 <- c(0,1,1,0,1,0,0,0,1)
smirnov(rbind(s1, s2, s3))