Visualizing association rules

To explore the relationship between items, one can visualize the association rules. In the following recipe, we introduce how to use the arulesViz package to visualize association rules.

Getting ready

In this recipe, one has to have completed the previous recipe by generating rules and have these stored in a variable named rules.pruned.

How to do it…

Please perform the following steps to visualize association rules:

1. First, install and load the arulesViz package:

   > install.packages("arulesViz")
   > library(arulesViz)
   

2. You can then make a scatterplot from the pruned rules:

   > plot(rules.pruned)
   

   

   Figure 3: The scatterplot of pruned rules

3. We can also present the rules in a grouped matrix:

   > plot(rules.pruned,method="grouped")
   

   

   Figure 4: The grouped matrix for three rules

4. Alternatively, we can use a graph to present the rules:

   > plot(rules.pruned,method="graph")
   

   

   Figure 5: The graph for three rules

How it works…

As an alternative...