ncol() Function in R
The ncol()
function in R is used to get the number of columns in a matrix.
Find number of rows and columns in a Basic Matrix
R
# Create an irregular matrix irregular_mat <- matrix (1:9,3,3) # Find the number of rows and columns num_rows_irregular <- nrow (irregular_mat) num_cols_irregular <- ncol (irregular_mat) # Print the results print ( paste ( "Number of rows in irregular matrix:" , num_rows_irregular)) print ( paste ( "Number of columns in irregular matrix:" , num_cols_irregular)) |
Output:
[1] "Number of rows in irregular matrix: 3"
[1] "Number of columns in irregular matrix: 3"
Find number of rows and columns in a Irregular Matrix in R
R
# Create a 3x4 matrix mat <- matrix (1:24,6,4) mat # Find the number of rows and columns num_rows <- nrow (mat) num_cols <- ncol (mat) # Print the results print ( paste ( "Number of rows:" , num_rows)) print ( paste ( "Number of columns:" , num_cols)) |
Output:
[,1] [,2] [,3] [,4]
[1,] 1 7 13 19
[2,] 2 8 14 20
[3,] 3 9 15 21
[4,] 4 10 16 22
[5,] 5 11 17 23
[6,] 6 12 18 24
[1] "Number of rows: 6"
[1] "Number of columns: 4"
Getting a Matrix of number of rows in R Programming – row() Function
In this article, we will discuss how to find the number of rows and columns in a matrix in R Programming Language.