[R] transaction object - how to coerce this data

[pdb]

Hi,

I am wanting to look at frequent item sets using the arules package. I need
to transform my data into a "transactions" object. The data I read in from a
file has 2 columns, an ID and an item. How do I convert data like this into
a transactions object?

I've tried 
class? transactions
but it only confuses me.

My data is like this....
 
basketID 	item
1 	bread
1 	cheese
1 	milk
2 	bread
2 	cheese 
2 	eggs
3 	bread
3 	cheese
3 	beer

and from what I gather it should be like this?

 data <- list(
  c("bread","cheese","milk"),
  c("bread","cheese","eggs"),
  c("bread","cheese","beer")
)

so I can use:

t <- as(data, "transactions")

Thanks in advance.

Phil


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