census {untb} | R Documentation |
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
census(a) as.census(a) is.census(a)
a |
Ecosystem data. In function as.census() , if a table,
interpret as species count data; otherwise, interpret as census data |
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.
Returns an object of class “census”.
Robin K. S. Hankin
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)