frab-class {frab}

Class “frab”

Description

The formal S4 class for frab objects

Usage

## S4 method for signature 'frab'
namedvector(x)

Arguments

x

Object of class frab

Objects from the Class

Formal class frab has a single slot x which is a named numeric vector.

The class has three accessor methods: names(), values(), and namedvector().

Author(s)

Robin K. S. Hankin

Examples

new("frab",x=c(a=6,b=4,c=1))   # formal creation method (discouraged)


frab(c(a=4,b=1,c=5))   # use frab() in day-to-day work

frab(c(a=4,b=0,c=5))   # zero entries are discarded

frab(c(a=4,b=3,b=5))   # repeted entries are summed

frab(c(apple=4,orange=3,cherry=5))   # any names are OK

x <- frab(c(d=1,y=3,a=2,b=5,rug=7,c=2))
(y <- rfrab())

x+y          # addition works as expected
x + 2*y      # arithmetic
x>2          # extraction
x[x>3] <- 99 # replacement


# sum(x)       # some summary methods implemented
# max(x)