I am working in R and I have the following problem with apriori.
I have a very similar code to this one (just using the grocery dataset): R - arules apriori Error in length(obj) : Method length not implemented for class rules
- I don't see the difference in the code between the question and the answer
- Even when I reduce confidence and support to 0 this error shows up when making a plot:
Error in length(object) : Method length not implemented for class itemsets
Here is my code:
data(Groceries)
rules<-apriori(data=Groceries, parameter=list(supp=0.001,conf = 0.15,minlen=2),
appearance = list(default="rhs",lhs="whole milk"),
control = list(verbose=F))
rules<-sort(rules, decreasing=TRUE,by="confidence")
arules::inspect(rules[1:5])
plot(rules,method="graph",interactive=FALSE,shading=NA)
Your help will be appreciated,
PS: the code itself is not my own creation
