[R] Creating vectors

[clips10]

Thanks for the help,

I tried to apply this to a vector with two columns, well I suppose it is not
a vector but for instance like this:

        [,1]  [,2]
[1,]    1      2
[2,]    2      3
[3,]    1      2
[4,]    1      2
[5,]    3     4

and return a vector :

1,2,1,1,3, so that it recognises both columns together.

I tried match(x, unique(x)) as earlier suggested but this returns a vector
of length 10 as opposed to 5, even though unique(x) does remove the repeated
rows.
Sorry if this is confusing, I am trying to do as originally posted but with
2 columns

Thanks
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