R How to Return a Row of a Data Frame Based On a Variable (Example Code)

In this R tutorial you’ll learn how to extract specific rows based on a variable of a data frame.

Constructing Example Data

data(iris)                       # Loading example data
head(iris)
#   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: How to Extract Particular Data Frame Rows Based On Column

iris[iris$Sepal.Length > 7, ]    # Extracting specific rows
#     Sepal.Length Sepal.Width Petal.Length Petal.Width   Species
# 103          7.1         3.0          5.9         2.1 virginica
# 106          7.6         3.0          6.6         2.1 virginica
# 108          7.3         2.9          6.3         1.8 virginica
# 110          7.2         3.6          6.1         2.5 virginica
# 118          7.7         3.8          6.7         2.2 virginica
# 119          7.7         2.6          6.9         2.3 virginica
# 123          7.7         2.8          6.7         2.0 virginica
# 126          7.2         3.2          6.0         1.8 virginica
# 130          7.2         3.0          5.8         1.6 virginica
# 131          7.4         2.8          6.1         1.9 virginica
# 132          7.9         3.8          6.4         2.0 virginica
# 136          7.7         3.0          6.1         2.3 virginica

Related Tutorials

Have a look at the following R tutorials. They focus on topics such as lists, naming data, and extracting data.

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