Get the number of columns of an Object in R Programming – ncol() Function
ncol() function in R Language is used to return the number of columns of the specified matrix.
Syntax: ncol(x)
Parameters:
x: matrix, vector, array or data frame
Example 1:
Python3
# R program to illustrate # ncol function # Getting R Biochemical Oxygen Demand Dataset BOD # Calling ncol() function to # get the number of columns ncol(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] 2
Example 2:
Python3
# R program to illustrate # ncol function # Specifying a matrix x < - matrix(c( 1 , 2 , 3 , 4 ), 2 , 2 ) # Calling the ncol() function ncol(x) |
Output:
[1] 2