Check if the Object is a Matrix in R Programming – is.matrix() Function

is.matrix() function in R Language is used to return TRUE if the specified data is in the form of matrix else return FALSE.

Syntax: is.matrix(x)

Parameters:
x: specified matrix

Example 1:

# R program to illustrate 
# is.matrix function 

# Specifying some different types of arrays 

A <- matrix(c(1:5)) 

B <- matrix(c(1:12), nrow = 4, byrow = TRUE) 

C <- matrix(c(1:12), nrow = 4, byrow = FALSE) 

# Calling is.matrix() function 

is.matrix(A) 

is.matrix(B) 

is.matrix(C)

Output:

[1] TRUE
[1] TRUE
[1] TRUE

Example 2:

# R program to illustrate 
# is.matrix function 

# Specifying Biochemical oxygen demand data 

x <- BOD 

# Calling is.matrix() function 

is.matrix(x) 

# Calling is.matrix() function 
# over different types of data 

is.matrix(4) 

is.matrix("2") 

is.matrix("a")

Output:

[1] FALSE
[1] FALSE
[1] FALSE
[1] FALSE

Article Tags :

R Language

R Matrix-Function

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