Dear users,
I have a matrix b as
[,1] [,2] [,3] [,4]
[1,] 0 0 0 0
[2,] 0 0 1 1
[3,] 0 1 0 1
[4,] 0 1 1 2
[5,] 1 0 0 1
[6,] 1 0 1 2
[7,] 1 1 0 2
[8,] 1 1 1 3
with last column the rowSums(b)
I want for each value of last column of b separately (b:0,1,2,3, to sort
the above table by reverse lexicographical order.
For the above table the result should be
1 0 0 0
2 1 0 0
3 0 1 0
4 0 0 1
5 1 1 0
6 1 0 1
7 0 1 1
8 1 1 1
Could anyone help me with this?
Thanks alot
Evgenia
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