Getting the Number of Elements
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
|
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 scalar giving the “length” of x.
Michael Hahsler
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