I generated this matrix with mat=matrix(c(1,2,3,4,5,6), nrow = 2, ncol = 2)
and I got this result:
[,1] [,2] [,3]
[1,] 1 3 5
[2,] 2 4 6
How can I add the second and third column to the first, like this:
[,1]
[1,] 1
[2,] 2
[3,] 3
[4,] 4
[5,] 5
[6,] 6
Is there any specific function that can solve this even If I would have 10 columns and I want them all added to the first column
我们可以只使用matrix
包装,它返回一个单列对象
matrix(mat)
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