Hi,
I am trying to create matrices X's based on one indicator variable, r.
Given a 4 x4 matrix X= [ 0,0,0,0
0,0,0,0
0,0,0,0
0,0,0,1]
r= c(0, 0, 0, 1)
I'd like to create separate matrices where
when i = 1, X= [1,0,0,0
0,0,0,0
0,0,0,0
0,0,0,1]
when i =2 , X= [0,0,0,0
0,1,0,0
0,0,0,0
0,0,0,1]
when i = 3, X= [0,0,0,0
0,0,0,0
0,0,1,0
0,0,0,1]
when i = 4, X= [0,0,0,0
0,0,0,0
0,0,0,0
0,0,0,1]
Any suggestions would be very appreciated.
Thanks
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