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R round Function

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The R round method is one of the Math function, which is used to round an individual number, or an expression to the nearest value. In this article, we will show you, How to use round in R Programming language with an example.

R round syntax

The basic syntax of the round in R Programming language is as shown below:

# Round numeric_Expression to nearest value 
round(numeric_Expression)

# Round the decimal points to specified integer_value 
round(numeric_Expression, integer_value)

Numeric_Expression: It can be a numeric value or a valid numerical expression.

  • If the numeric_Expression is positive or Negative numeric value, round function will return the nearest ceiling value.
  • If the numeric_Expression is not a number (NaN) then round will return NaN.
  • and numeric_Expression is positive or negative infinity, a function will return the same

R round Function example 1

In this program, We are going to return the round values of different data and display the output

# round in R example

# Use round Function on Positive  Value
round(45.56)
round(525.4999)

# Use round Function on Negative values
round(-140.825)
round(-13.23)

# round Value of an Expression
round(140.986 + 122.456 - 220.4233 + 12.67)

# round Function on vectors
number <- c(-22.26, 456.94, 2.50, 2.51, -36.49, -813.111 , -525.123)
round(number)

OUTPUT

R Round Function 1

round Function example 2

In this program, We are going to round the decimal values of different data & display the output

# round in R example

# Use round Function on Positive  Value
round(45.565, 0)

# Round decimal points to 1 
round(525.419299, 1)
round(525.419299, 2)

# Use round Function on Negative values
round(-140.825, 2) 
round(-13.239, 2)

# round Value of an Expression
round((140.986 + 122.4563256 - 220.4233 + 12.67), 2)

# round Function on vectors
number <- c(-22.26, 456.94, 2.50, 2.591, -36.49, -813.111 , -525.123)
round(number, 1)

OUTPUT

R Round Function 2

R round Function example 3

In this program, We are going to apply the round function on List data and display the output. For this example, we are using the airquality data set provided by R

# round in R example

#Dataset We are going to use
airquality

# Applying round function on Airquality Wind Data
round(airquality$Wind)

round(airquality$Wind, 1)

OUTPUT

R Round Function 3

round Function Example 4

The round function in R programming also allows you to round the numeric values in a database, or table columns. In this example, We are going to round all the records present in [Standard Cost], and [Sales Amount] columns. For this, We are going to use the below-shown csv file data

TIP: Please refer, R Read CSV Function article to understand the steps involved in importing CSV file.

R round Function 5

R CODE

# round in R example

getwd()

#Datat We are going to use
product <- read.csv("Product_Data.csv", TRUE, sep = ",")
print(product)

# Applying round function on Standard Cost, and Sales Amount
round(product$StandardCost)
round(product$StandardCost, 1)

round(product$SalesAmount)
round(product$SalesAmount, 2)

OUTPUT

R Round Function 4

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