Check if an Object is of Type Numeric in R Programming – is.numeric() Function

is.numeric() function in R Language is used to check if the object passed to it as argument is of numeric type.

Syntax: is.numeric(x)

Parameters:
x: Object to be checked

Example 1:

# R program to check if
# object is of numeric type

# Calling is.numeric() function
is.numeric(1)
is.numeric(1.5)
is.numeric(-1.5)

Output:

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

Example 2:

# R program to check if
# object is of numeric type

# Creating a matrix
x1 <- matrix(c(1:9), 3, 3)

# Calling is.numeric() function
is.numeric(x1)

Output:

[1] TRUE