+.count {untb} | R Documentation |
Add two count objects
Description
Adds two count objects
Usage
## S3 method for class 'count'
a + b
## S3 method for class 'census'
a + b
Arguments
a , b |
objects of class |
Details
Consider count objects a
and b
. Then a+b
is a
count object that records the number of each species in a
and
b
combined. It is as though the organisms in the surveys were
pooled.
Census objects are coerced to count objects, added, then the result coerced to a count object.
The operation is commutative and associative.
Author(s)
Robin K. S. Hankin, based on an R-help tip from Gabor Grothendiek
Examples
a <- count(c(dogs=4,pigs=0,slugs=5))
b <- count(c(slugs=4,hogs=1,frogs=19))
a+b
[Package untb version 1.7-7-1 Index]