Round Only Numeric Variables of Data Frame in R (Example Code)

In this tutorial, I’ll illustrate how to round numeric variables of a mixed data frame in R.

Example Data

data(iris)                    # Loading iris data
head(iris)                    # Display head of iris data set
#   Sepal.Length Sepal.Width Petal.Length Petal.Width Species
# 1          5.1         3.5          1.4         0.2  setosa
# 2          4.9         3.0          1.4         0.2  setosa
# 3          4.7         3.2          1.3         0.2  setosa
# 4          4.6         3.1          1.5         0.2  setosa
# 5          5.0         3.6          1.4         0.2  setosa
# 6          5.4         3.9          1.7         0.4  setosa

Example: Round Only Numeric Columns of Data Frame with Factors & Characters

install.packages("dplyr")     # Install dplyr package
library("dplyr")              # Load dplyr package
iris_round <- iris %>%        # Applying mutate_if function
  mutate_if(is.numeric, round, digits = 0)
head(iris_round)              # Display head of rounded data frame
#   Sepal.Length Sepal.Width Petal.Length Petal.Width Species
# 1            5           4            1           0  setosa
# 2            5           3            1           0  setosa
# 3            5           3            1           0  setosa
# 4            5           3            2           0  setosa
# 5            5           4            1           0  setosa
# 6            5           4            2           0  setosa

Related Articles

You may find some related R tutorials on topics such as numeric values, variables, and data conversion below.

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