Get or Set Dimensions of a Matrix in R Programming – dim() Function
dim()
function in R Language is used to get or set the dimension of the specified matrix, array or data frame.
Syntax: dim(x)
Parameters:
x: array, matrix or data frame.
Example 1:
# R program to illustrate # dim function # Getting R Biochemical Oxygen Demand Dataset BOD # Getting dimension of the above dataset dim(BOD) |
Output:
Time demand 1 1 8.3 2 2 10.3 3 3 19.0 4 4 16.0 5 5 15.6 6 7 19.8 [1] 6 2
Example 2:
# R program to illustrate # dim function # Getting the number from 1 to 9 x < - rep( 1 : 9 ) x # Calling the dim() function to # Set dimension of 3 * 3 dim(x) < - c( 3 , 3 ) # Getting the numbers # in 3 * 3 representation x |
Output:
[1] 1 2 3 4 5 6 7 8 9 [, 1] [, 2] [, 3] [1, ] 1 4 7 [2, ] 2 5 8 [3, ] 3 6 9
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