itemFrequency: Getting Frequency/Support for Single Items
Description
Provides the generic function itemFrequency and S4 methods to get the
frequency/support for all single items in an objects based on
itemMatrix. For example, it is used to get the
single item support from an object of class
transactions without mining.
Usage
itemFrequency(x, ...)
## S3 method for class 'itemMatrix':
itemFrequency(x, type)
## S3 method for class 'itemMatrix':
itemFrequency(x, type)
Arguments
x
an object.
...
further arguments are passed on.
type
a character string specifying
if "relative" frequency/support or "absolute"
frequency/support (item counts) is returned. (default: "relative").
Value
itemFrequency returns a named numeric vector. Each element is the
frequency/support of the corresponding item in object x.
The items appear in the vector in the same
order as in the binary matrix in x.