Provides the generic function sample() and methods to sample from transactions and
associations.
Usage
# S4 method for class 'itemMatrix'
sample(x, size, replace = FALSE, prob = NULL, ...)
# S4 method for class 'associations'
sample(x, size, replace = FALSE, prob = NULL, ...)Arguments
- x
object to be sampled from (a set of associations or transactions).
- size
sample size.
- replace
a logical. Sample with replacement?
- prob
a numeric vector of probability weights.
- ...
further arguments.
See also
Other preprocessing:
discretize(),
hierarchy,
itemCoding,
merge()
Other associations functions:
abbreviate(),
associations-class,
c,
duplicated(),
extract,
inspect(),
is.closed(),
is.generator(),
is.maximal(),
is.redundant(),
is.significant(),
is.superset(),
itemsets-class,
match(),
rules-class,
sets,
size(),
sort(),
unique()
Other itemMatrix and transactions functions:
abbreviate(),
c,
crossTable(),
duplicated(),
extract,
hierarchy,
image,
inspect(),
is.superset(),
itemFrequency(),
itemFrequencyPlot(),
itemMatrix-class,
itemwiseSetOps,
match(),
merge(),
random.transactions(),
sets,
size(),
supportingTransactions(),
tidLists-class,
transactions-class,
unique()
Examples
data("Adult")
## sample with replacement
s <- sample(Adult, 500, replace = TRUE)
s
#> transactions in sparse format with
#> 500 transactions (rows) and
#> 115 items (columns)