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How to obtain the length of a matrix in R

Onyejiaku Theophilus Chidalu

Overview

To understand what a matrix is and how to create a matrix in R, go through this shot.

The length of a given matrix is the multiple of its number of rows and number of columns. To obtain the length of a matrix in R, we simply use the length() function.

Syntax

length(matrix)

Parameter value

The length() function takes a single mandatory parameter value, i.e., the name of the matrix whose length we want to obtain.

Return value

The length() function returns the length of the given matrix.

Example

mymatrix <- matrix(c("apple", "banana", "cherry", "orange"), nrow = 2, ncol = 2)

length(mymatrix)
Implementing the length() function

Explanation

  • In line 1, we create a 2-by-2 matrix (a matrix with 2 rows and 2 columns) with the name mymatrix.

  • In line 3, we obtain the length of mymatrix by using the length() function.

The [1] in the output represents that it is the first value which is returned by the function.

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Onyejiaku Theophilus Chidalu
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