另一种选择是:
m1 <- matrix(1:(300*400*5), nrow=300*400, ncol=5)
lst <- lapply(split(seq_len(nrow(m1)),(seq_len(nrow(m1))-1) %/%300 +1),
function(i) m1[i,])
arr1 <- array(0, dim=c(300,5,400))
for(i in 1:400){
arr1[,,i] <- lst[[i]]
}
m1[297:300,]
# [,1] [,2] [,3] [,4] [,5]
#[1,] 297 120297 240297 360297 480297
#[2,] 298 120298 240298 360298 480298
#[3,] 299 120299 240299 360299 480299
#[4,] 300 120300 240300 360300 480300
tail(arr1[,,1],4)
# [,1] [,2] [,3] [,4] [,5]
#[297,] 297 120297 240297 360297 480297
#[298,] 298 120298 240298 360298 480298
#[299,] 299 120299 240299 360299 480299
#[300,] 300 120300 240300 360300 480300
或者按照@Ananda Mahto 的建议
library(abind)
arr2 <- abind(lapply(split(seq_len(nrow(m1)),
(seq_len(nrow(m1))-1) %/% 300 + 1), function(x) m1[x, ]), along = 3)