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 'tidLists': length(x) ## S4 method for signature 'itemMatrix': length(x)
x |
an object of class
transactions ,
rules ,
itemsets ,
tidLists , 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 tidLists
the length is the number of
lists (one per item or itemset) in the object.
An integer
giving the “length” of x
.