length {arules} | R Documentation |
S4 methods for length
which return the number of elements of
objects defined in the package arules.
## S4 method for signature 'rules': length(x) ## S4 method for signature 'itemsets': length(x) ## S4 method for signature 'itemMatrix': length(x)
x |
an object of class
transactions ,
rules ,
itemsets ,
tidList , or
itemMatrix .
|
For itemMatrix
and
transactions
the length is defined
as the number of rows (transactions) in the binary incidence matrix.
For sets of associations (rules
,
itemsets
and
associations
in general) the length
is defined as the number of elements in the set (i.e., the number of
rules or itemsets).
For tidList
the length is the number of
elements in the object (a transaction ID list belongs to a set of
itemsets and contains for each itemset in the set one list element
containing several transaction IDs).
An integer
giving the “length” of x
.
Michael Hahsler