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. |
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 RHS and the RHS.
itemMatrix-class
,
transactions-class
data("Adult") summary(size(Adult))