You can use the following methods to find unique values and then sort them in R:

**Method 1: Find Unique Values in Vector & Sort Them**

#get unique values sorted in ascending order sort(unique(data))

**Method 2: Find Unique Rows in Data Frame & Sort Them**

#remove duplicate rows in data frame df_new = df[!duplicated(df), ] #display unique rows sorted by values in specific column df_new = df_new[order(df_new$my_column), ]

The following examples show how to use each method in practice.

**Example 1: Find Unique Values in Vector & Sort Them**

Suppose we have the following vector in R:

#create vector of values data <- c(2, 2, 4, 7, 2, 4, 14, 7, 10, 7)

We can use the following syntax to find the unique values in the vector and sort them:

#get unique values sorted in ascending order sort(unique(data)) [1] 2 4 7 10 14

Notice that the unique values from the vector are returned in ascending order.

We can also use the argument **decreasing=TRUE** to sort the unique values in descending order:

#get unique values sorted in descending order sort(unique(data), decreasing=TRUE) [1] 14 10 7 4 2

Notice that the unique values from the vector are returned in descending order.

**Example 2: Find Unique Values in Data Frame & Sort Them**

Suppose we have the following data frame in R:

#create data frame df <- data.frame(team=c('A', 'B', 'A', 'A', 'A', 'B', 'B', 'B', 'A', 'B'), points=c(2, 10, 7, 7, 2, 4, 14, 7, 2, 7)) #view data frame df team points 1 A 2 2 B 10 3 A 7 4 A 7 5 A 2 6 B 4 7 B 14 8 B 7 9 A 2 10 B 7

We can use the following syntax to find the unique rows in the data frame and sort them based on the values in the **team** column:

#remove duplicate rows in data frame df_new = df[!duplicated(df), ] #sort unique rows based on values in team column df_new = df_new[order(df_new$team, df_new$points), ] #view new data frame df_new team points 1 A 2 3 A 7 2 B 4 6 B 7 7 B 10 8 B 14

Notice that the unique rows are returned and sorted based on the values in the **team** column, then by the values in the **points** column.

**Related** How to Use sort(), order(), and rank() in R

**Additional Resources**

The following tutorials explain how to perform other common operations in R:

How to Count Unique Values in Column in R

How to Select Unique Rows in a Data Frame in R

How to Find All Unique Combinations of Two Vectors in R