The “select” Function in R

• Package: dplyr

• Purpose: Selects columns from data frames.

• General Class: Data Manipulation

• Required Argument(s):

• .data: A data frame or tibble.

• ...: Column names or expressions to select.

• Notable Optional Arguments:

• starts_with, ends_with, contains, matches: Helper functions to select columns based on name patterns.

• rename: Rename selected columns.

• across: Apply a function to select columns.

• everything: Select all columns.

• Example:

• # Example data for selecting columns using dplyr
  library(dplyr)
  
  df <- data.frame(
  ID = 1:5,
  Name = c("Alice", "Bob", "Charlie", "David", "Emma"),
  Age = c(25, 30, 22, 28, 35)
  )
  
  # Select only the "ID" and "Name" columns
  selected_df <- select(df, ID, Name)
  
  # Display the selected data frame
  print(selected_df)

• In this example, the select function from the dplyr package is used to choose specific columns (“ID” and “Name”) from a data frame (df). The result is a new data frame (selected_df) containing only the selected columns. Note that you need to have the dplyr package installed and loaded to use the select function.