How to retrieve summary elements from S4 class object?

Asked Sep 11 '19 at 05:28

Active Sep 11 '19 at 05:28

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I'm doing some in-line calculations in R Markdown. Just wondering how to retrieve summary elements of transactional data? Here is the code I have so far:

## Libraries
library(arules)

## Data
data("Adult")

## Other summaries
length(Adult)    # no. transactions
dim(itemInfo(Adult))[[1]]    # no. distinct items

What I'm trying to get is the density of the itemset. These are the things I have tried:

str(summary(Adult))

summary(Adult)$density
summary(Adult)[["density"]]
Adult$density

This is the error I keep getting:

object of type 'S4' is not subsettable

Thanks in advance for any help you might be able to give.

asked Sep 11 '19 at 05:28

2

`summary(Adult)@density` – Roland Sep 11 '19 at 06:07
2

The output of `str(summary(Adult))` actually shows you the appropriate operator for accessing S4 slots. – Roland Sep 11 '19 at 06:34
Oh I'm silly. Thank you. – Sep 11 '19 at 07:44

How to retrieve summary elements from S4 class object?

0 Answers0