Dear list,
I want to apply the "table" function to every pair of variables in df
and the return should be a list.
setwd(123)
asd <- data.frame(a1=sample(1:4, 20, replace=TRUE),
a2=sample(1:4, 20, replace=TRUE),
a3=sample(1:4, 20, replace=TRUE),
a4=sample(1:4, 20, replace=TRUE))
with(asd, table(a1, a2))
with(asd, table(a1, a3))
with(asd, table(a1, a4))
...
I'm sure there is a solution using "combn" - but I don't get it...
combn(colnames(asd), 2)
...
Thanks for any help!
Patrick
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