Sort or Order Rank in R
Sort or Order Rank in R with sort(), order(), and rank() Functions. We will learn how to sort data in R using the sort(), order(), and rank() functions.
These functions are essential for data manipulation and analysis in R.
Example 1: Sorting Vectors
Let’s create an example vector and apply the sort(), order(), and rank() functions to it.
x <- c(4, -10, 8, 0) x # Sort the vector sort(x) # [1] -10 0 4 8 # Order the vector order(x) # [1] 2 4 1 3 # Rank the vector rank(x) # [1] 3 1 4 2
Example 2: Ordering Data Frame Rows
Let’s create an example data frame and order its rows by one of its columns.
my_data <- data.frame(x, y = LETTERS[1:4]) my_data # Order the data frame by column x my_data[order(my_data$x), ] # x y # 2 -10 B # 4 0 D # 1 4 A # 3 8 C
Example 3: Sorting Lists
Let’s create an example list and sort it by its names.
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my_list <- list(B = 1:5, C = 6:10, A = LETTERS[15:19]) my_list # Sort the list alphabetically my_list[order(names(my_list))] # $A # [1] "O" "P" "Q" "R" "S" # # $B # [1] 1 2 3 4 5 # # $C # [1] 6 7 8 9 10
Example 4: Sorting Descendingly
Let’s sort the same vector in descending order using the sort() and order() functions.
sort(x, decreasing = TRUE) # [1] 8 4 0 -10 order(x, decreasing = TRUE) # [1] 3 1 4 2
Example 5: Sorting Data by Group
Let’s create an example data frame with multiple columns and sort it by group.
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my_data2 <- data.frame(value = c(6, 2, 4, 1, 8, 5), group1 = c("B", "A", "B", "C", "A", "B"), group2 = c("E", "E", "E", "D", "D", "D"))
my_data2
# Sort the data by group
my_data2[order(my_data2$group1, my_data2$group2), ]
# value group1 group2
# 3 8 A D
# 2 2 A E
# 5 5 B D
# 6 6 B E
# 4 4 B E
# 1 1 C DExample 6: Lesser Known Sorting Functions
Let’s explore some lesser known sorting functions in R.
is.unsorted(x) # [1] TRUE sort.list(x) # [1] -10 -10 -10 -10 -10 -10 -10 -10 -10 -10 sort.int(x) # [1] -10 -10 -10 -10 -10 xtfrm(x) # [1] -10 -10 -10 -10
Sort or Order Rank in R, These examples demonstrate how to use the sort(), order(), and rank() functions in R to sort data in various ways.
