'Error in (function (classes, fdef, mtable) : unable to find an inherited method for function ‘itemFrequencyPlot’ for signature ‘"data.frame"’
I cannot understand the reason but when I try to run this code, it gives me an error. Do you know what can be the reason?
library(arules)
library(arulesViz)
library(RColorBrewer)
# import dataset
data("trsf")
# using apriori() function
rules <- apriori(trsf,
parameter = list(supp = 0.01, conf = 0.2))
# using inspect() function
inspect(rules[1:10])
# using itemFrequencyPlot() function
arules::itemFrequencyPlot(trsf, topN = 20,
col = brewer.pal(8, 'Pastel2'),
main = 'Relative Item Frequency Plot',
type = "relative",
ylab = "Item Frequency (Relative)")**
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