itemFrequency | R Documentation |
Provides the generic function itemFrequency()
and 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.
itemFrequency(x, ...)
## S4 method for signature 'itemMatrix'
itemFrequency(x, type = c("relative", "absolute"), weighted = FALSE)
## S4 method for signature 'tidLists'
itemFrequency(x, type = c("relative", "absolute"))
x |
an object of class itemMatrix or tidLists. |
... |
further arguments are passed on. |
type |
a character string specifying if |
weighted |
should support be weighted by transactions weights stored as
column |
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
.
Michael Hahsler
itemFrequencyPlot()
Other itemMatrix and transactions functions:
abbreviate()
,
c()
,
crossTable()
,
duplicated()
,
extract
,
hierarchy
,
image()
,
inspect()
,
is.superset()
,
itemFrequencyPlot()
,
itemMatrix-class
,
match()
,
merge()
,
random.transactions()
,
sample()
,
sets
,
size()
,
supportingTransactions()
,
tidLists-class
,
transactions-class
,
unique()
data("Adult")
itemFrequency(Adult, type = "relative")
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.