How to Remove First Variable of Data Frame in R (Example Code)

This post illustrates how to remove the first column of a data frame in R.

Creation of Exemplifying Data

data(iris)                      # Example data
head(iris)                      # Display example data
#   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: Keep Second to Last Column of Data Frame

iris_new <- iris[ , - 1]        # Deleting first variable
head(iris_new)                  # Display new iris data set
#   Sepal.Width Petal.Length Petal.Width Species
# 1         3.5          1.4         0.2  setosa
# 2         3.0          1.4         0.2  setosa
# 3         3.2          1.3         0.2  setosa
# 4         3.1          1.5         0.2  setosa
# 5         3.6          1.4         0.2  setosa
# 6         3.9          1.7         0.4  setosa

Further Resources & Related Tutorials

Please find some related R programming language tutorials below.

Leave a Reply

Your email address will not be published.

Fill out this field
Fill out this field
Please enter a valid email address.
You need to agree with the terms to proceed

Menu
Top