How to Reorder Rows of a data.table in R (Example Code)

install.packages("data.table")                  # Install & load data.table
library("data.table")

install.packages("data.table") # Install & load data.table library("data.table")

my_df <- data.table(A = c(2, 2, 3, 2, 1, 3),    # Construct new data.table
                    B = c("x", "a", "f", "f", "a", "x"))
my_df                                           # Display data.table in RStudio console
#    A B
# 1: 2 x
# 2: 2 a
# 3: 3 f
# 4: 2 f
# 5: 1 a
# 6: 3 x

my_df <- data.table(A = c(2, 2, 3, 2, 1, 3), # Construct new data.table B = c("x", "a", "f", "f", "a", "x")) my_df # Display data.table in RStudio console # A B # 1: 2 x # 2: 2 a # 3: 3 f # 4: 2 f # 5: 1 a # 6: 3 x

setorder(my_df)                                 # Sorting data.table
my_df                                           # Displaying updated data.table
#    A B
# 1: 1 a
# 2: 2 a
# 3: 2 f
# 4: 2 x
# 5: 3 f
# 6: 3 x

setorder(my_df) # Sorting data.table my_df # Displaying updated data.table # A B # 1: 1 a # 2: 2 a # 3: 2 f # 4: 2 x # 5: 3 f # 6: 3 x