The inspect function not found

问题

Coursetopics <-read.csv("Coursetopics.csv")

#remove first column

Coursetopics.mat <-as.matrix(Coursetopics[,-1])

#convert the binary incidence matrix into a transaction database

Coursetopics.trans<-as(Coursetopics.mat, "transactions")
inspect(Coursetopics.trans)

This is the code. My issue is getting the inspect function to work properly Error reads as follows:

Error in inspect(Coursetopics.trans) : could not find function "inspect"

I have added arules and tm packages but no luck on getting rid of the error.

来源：https://stackoverflow.com/questions/61432544/the-inspect-function-not-found