Question

Which function is used over the margins of an array?

Answer 1

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X is an array or a matrix if the dimension of the array is 2; MARGIN is a variable defining how the function is applied: when MARGIN=1 , it applies over rows, whereas with MARGIN=2 , it works over columns. Note that when you use the construct MARGIN=c(1,2) , it applies to both rows and columns; and.