untb (version 1.6-1)

extractor: Extract rows of a database in count form

Description

Extracts rows of a data frame and, if there is one row only, coerces to a count object, preserving the species names

Usage

extractor(x, index)

Arguments

x

A data frame with column headings being species names

index

A vector of indices to extract

Details

If index is length one, the numbers are interpreted as species counts, and the output is coereced to a count object.

Examples

data(saunders)
plot(extractor(saunders.exposed,1))

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