image {arules} | R Documentation |
Provides the S4 methods image
to generate level plots to visually
inspect binary incidence matrices, i.e., objects based on
itemMatrix
(e.g., transactions, tidLists, items in
itemsets or rhs/lhs in rules). These plots can be used to identify problems
in a data set (e.g., recording problems with some transactions containing all
items).
## S4 method for signature 'itemMatrix' image(x, xlab = "Items (Columns)", ylab = "Elements (Rows)", ...) ## S4 method for signature 'transactions' image(x, xlab = "Items (Columns)", ylab = "Transactions (Rows)", ...) ## S4 method for signature 'tidLists' image(x, xlab="Transactions (Columns)", ylab="Items/itemsets (Rows)", ...)
x |
the object ( |
xlab, ylab |
labels for the plot. |
... |
further arguments passed on to |
Michael Hahsler
image
(for dgTMatrix
in Matrix),
levelplot
(in lattice),
itemMatrix-class
,
transactions-class
,
tidLists-class
data("Epub") ## in this data set we can see that not all ## items were available from the beginning. image(Epub[1:1000])