mylist <- list(matrix(c(1, 3, -1, 0, 2, 1), nrow = 2, byrow = TRUE),
matrix(c(-2, 0, 10, 1, 2, 9, 2, 0, 0), nrow = 3, byrow = TRUE))
> mylist
[[1]]
[,1] [,2] [,3]
[1,] 1 3 -1
[2,] 0 2 1
[[2]]
[,1] [,2] [,3]
[1,] -2 0 10
[2,] 1 2 9
[3,] 2 0 0
我有一个名为mylist
的矩数组表,其中矩阵的维数可能不同.对于每个矩阵,我希望将行值加倍,并将其作为新行插入下方.我想要的结果如下:
[[1]]
[,1] [,2] [,3]
[1,] 1 3 -1
[2,] 2 6 -2
[3,] 0 2 1
[4,] 0 4 2
[[2]]
[,1] [,2] [,3]
[1,] -2 0 10
[2,] -4 0 20
[3,] 1 2 9
[4,] 2 4 18
[5,] 2 0 0
[6,] 4 0 0