Get the number of columns of an Object in R Programming – ncol() Function Last Updated : 26 Feb, 2021 Improve Improve Like Article Like Save Share Report 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 Like Article Suggest improvement Next Get the number of rows of an Object in R Programming - nrow() Function Share your thoughts in the comments Add Your Comment Please Login to comment...