size {arules} | R Documentation |
Provides the generic function size
and S4 methods to get the size of
each element from objects based on itemMatrix
. For
example, it is used to get a vector of transaction sizes (i.e., the number of
present items (ones) per element (row) of the binary incidence matrix) from
an object of class transactions
).
size(x, ...)
x |
an object. |
... |
further (unused) arguments. |
size
returns a numeric vector of length length(x)
. Each
element is the size of the corresponding element (row in the matrix) in
object x
. For rules, size
returns the sum of the number of
elements in the LHS and the RHS.
Michael Hahsler
itemMatrix-class
,
transactions-class
data("Adult") summary(size(Adult))