[R] two questions

[Ambrosini Alessandro]

The first: if I have a vector as (1,1,3,2,1,1), which is the command that
gives all the positions of the min value? From the vector of the example a
would like to obtain a new vector as (1,2,5,6) that give me all the
positions of the minimum value 1.

The second: if I have a matrix "A" and I want to obtain a new matrix
deleting a column or a row of A, what have I to do?
Thank you.
           Alessandro

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