[R] (no subject)
Salas, Andria Kay
aks2515 at uncw.edu
Mon Nov 17 16:54:29 CET 2008
I need help generating all possible combination of a vector of randomly assigned values of 1 and -1. For example, a vector of 20 randomly placed 1s and -1s, and all possibilities (which would amount to 2^20 total vectors). I am able to generate one such vector (via sample(c(-1,1),20,replace=TRUE)), but I do not know how to generate all the possibilities, which would need to be placed in a matrix. Any help would be greatly appreciated!!!
More information about the R-help