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).
Usage
size(x)
Arguments
x
an object.
Value
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.