# Number of Times an Entry Occurrs in a Data Frame in R (2 Examples)

In this article you’ll learn how to count a certain entry occurrs in a data frame in the R programming language.

## Creation of Exemplifying Data

data(iris) # Load 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 |

data(iris) # Load 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 1: Number of Times a Value Occurs in a Specific Data Frame Column

sum(iris$Sepal.Length == 5) # Count in single variable # [1] 10 |

sum(iris$Sepal.Length == 5) # Count in single variable # [1] 10

## Example 2: Number of Times a Value Occurs in an Entire Data Frame

sum(iris == 5) # Count in all variables # [1] 14 |

sum(iris == 5) # Count in all variables # [1] 14

## Related Tutorials & Further Resources

You may find some further R programming tutorials on topics such as counting, numeric values, and variables below: