Question

How to create an 2D array in R

Answer 1

v <- c(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16)

arr <- array(c(v),dim = c(4,4))

print(arr)
 
 
  
  
# run:
#
#      [,1] [,2] [,3] [,4]
# [1,]    1    5    9   13
# [2,]    2    6   10   14
# [3,]    3    7   11   15
# [4,]    4    8   12   16
#

 

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Answer 2

v <- c(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16)

arr <- array(c(v),dim = c(4,3))

print(arr)
 
 
  
  
# run:
#
#      [,1] [,2] [,3]
# [1,]    1    5    9
# [2,]    2    6   10
# [3,]    3    7   11
# [4,]    4    8   12
#

 

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