# crossTable

From arules v1.5-4
by Michael Hahsler

##### Cross-tabulate joint occurrences across pairs of items

Provides the generic function `crossTable`

and the S4 method to
cross-tabulate joint occurrences across pairs of items.

- Keywords
- models

##### Usage

```
crossTable(x, ...)
# S4 method for itemMatrix
crossTable(x, measure = c("count", "support", "probability",
"lift", "chiSquared"), sort = FALSE)
```

##### Arguments

- x
object to be cross-tabulated (

`transactions`

or`itemMatrix`

).- measure
measure to return. Default is co-occurence counts.

- sort
sort the items by support.

- ...
aditional arguments.

##### Value

A symmetric matrix of n time n, where n is the number of items times
in `x`

. The matrix contains the co-occurrence counts between pairs of
items.

##### See Also

##### Examples

```
# NOT RUN {
data("Groceries")
ct <- crossTable(Groceries, sort=TRUE)
ct[1:5, 1:5]
sp <- crossTable(Groceries, measure="support", sort=TRUE)
sp[1:5,1:5]
lift <- crossTable(Groceries, measure="lift", sort=TRUE)
lift[1:5,1:5]
chi2 <- crossTable(Groceries, measure="chiSquared", sort=TRUE)
chi2[1:5,1:5]
# }
```

*Documentation reproduced from package arules, version 1.5-4, License: GPL-3*

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