Displaying 1 result from an estimated 1 matches for "combin_mat".
2005 Dec 06
1
Help on a matrix task
...a general solution to the following matrix task:
Given:
N<-4
input_mat<-matrix(c(1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0,
1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0,
1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0),ncol=N)
combin_mat<-matrix(c(1, 2,
1, 3,
1, 4,
2, 3,
2, 4,
3, 4),ncol=choose(N,2))
Find the indices of rows in "input_mat", whose elements indicated by the
pair of elements in each column of "combin_mat", are equal 1. So, for
the first
column of combin_mat (1,2) the answer shoul...