[R] vector matching

Hello all, I have searched the archives for a similar problem to no avail. I could use your help. I have a bunch of vectors organized into two matrices, x and y. These vectors (as rows) consist of combinations of elements such that order does not matter. I want to create a third matrix from

[R] teaching R

Hello all, I am going to be running a small statistics workshop using R sometime in November. I am restricted to R because of the specific libraries I will be using - a good thing in my book - however the attendees are unfamiliar with R. I plan on giving as little R information as possible -