Question

In R create a 5x6x4 array that contains the integers 1 through 120 entered in the default fashion. Then subset the array to show the second and third row, the first, fourth, and sixth colums and every layer except the first and second.

Answer 1

We first create the array and named it by X, as follows:

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X=array(1:120,dim=c(5,6,4))

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Now we subset the array X, such that it contains the 2nd and 3rd row; 1,4,6th column and 3,4th layer, as follows:

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x[2:3,c(1,4,6),-c(1,2)]

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The output is given below:

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, , 1

[,1] [,2] [,3]
[1,] 62 77 87
[2,] 63 78 88

, , 2

[,1] [,2] [,3]
[1,] 92 107 117
[2,] 93 108 118

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