untb (version 1.3-3)

census: Construct, coerce, and test for a census object

Description

In package untb, ecosystem data is held in one of two preferred forms: census data and count data. Function as.census() coerces to census format

Usage

census(a)
as.census(a)
is.census(a)

Arguments

a

Ecosystem data. In function as.census(), if a table, interpret as species count data; otherwise, interpret as census data

Value

• Returns an object of class census.

Details

A census object is a list of individuals in the form of an unnamed vector whose elements indicate the individuals' species; compare count objects.

An object of class census is also an unordered factor. The levels are always in alphabetical order; the vector itself is sorted so that the individuals of the most abundant species appear first, individuals of the second most abundant species appear second, and so on: the singletons appear last. Function census() takes an object of class count and returns an object of class census. This function is not really intended for the end user.

Function as.census() coerces to class count then returns census() of the result.

See Also

count

Examples

a <- c(rep("oak",5) ,rep("ash",2),rep("elm",3),rep("xx",4))
# note that "a" is a plain vector here.
as.census(a)