dataframe - how to transform a data.frame into transactional data for arules in R? -


i have data.frame of following data:

rows: users
columns: different items coded binary 

user  item1  item2  itemm  1      0      1      1  2      0      1      1  3      1      1      1  4      1      0      1  n      1      1      1

how can transform data.frame transactional row-wise basket use "arules"-package in r?

thanks help!

hope helps!

library(arules) df <- data.frame(   user = c(1,2,3,4),   item1 = c(0,0,1,1),   item2 = c(1,1,1,0),   item3 = c(1,1,1,1))   l = lapply(apply(df[,-1], 1, function(x) names(df[,-1])[x==1]),         function(x) paste(x,collapse = ",")) write(sapply(l, function(x) tostring(x)), file = "demo_basket") tr <- read.transactions("demo_basket", format = "basket", sep=",")

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