shipunov (version 1.0)

Coml: Compare checklists

Description

Compare species checklists

Usage

Coml(df1, df2)
# S3 method for Coml
summary(object, ..., n=10)

Arguments

df1

First data frame with species presence/absence data, species as row names

df2

Second data frame

object

Object of the class 'Coml'

n

Number of indicator species

...

Additional arguments

Value

Object of the class 'Coml', or nothing

Details

Compare two (groups of) checklists (Abramova et al., 2003).

Calculates difference (in %) between checklists with common base, i.e., species occurrence/abundance columns of data frame with species names as row names.

Finds names of "indicators" most characteristic to each group

References

Abramova L. A., Rimskaya-Korsakova N. N., Shipunov A. B. 2003. The comparative study of the flora of Kiv Gulf, Chupa Gulf and Keret' Archipelago islands (Kandalaksha Bay of White Sea). Proceedings of the Pertsov White Sea Biological Station. Vol. 9. Moscow. P. 22--33. in Russian (English abstract)

Examples

# NOT RUN {
y <- read.table("http://ashipunov.info/shipunov/open/dolbli.txt", h=TRUE, sep="\t")
y.Coml <- Coml(y[1:45], y[46:79])
summary(y.Coml, n=5)
# }