Hi R,
I have a matrix A,
A=
[,1] [,2]
[1,] a u
[2,] b v
[3,] c x
[4,] d x
[5,] e x
I want to put the 2nd column of this matrix in a vector without
duplicates. i.e., my vector v should be (u, v, x), whose length is 3.
Can anybody help me on this?
Thanks in advance
Shubha.
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