Question

So I have two vectors of data points, and I would like to make a list of each unique pair, along with that pair’s frequency. I know that I can use table to do this with one of the vectors, but I can’t seem to figure out how to make it do it with pairs.

Answer 1

it’s just…

dat <- data.frame(x = sample(letters[1:3], size = 100, replace = TRUE),
    y = sample(letters[1:3], size = 100, replace = TRUE) )

unique(dat)
table(dat)

or, say your vectors are just x, and y and you only want the table…

table(x,y)