What is an R Data Frame?

A data frame in R is a two-dimensional data structure that can store elements of different types (such as numbers, characters, and factors), similar to a table in a database or a spreadsheet. Each column in a data frame can contain a different type of data, while all rows represent individual observations.

# Creating a data frame in R
my_data_frame <- data.frame(
    Name = c("Alice", "Bob", "Charlie"),
    Age = c(25, 30, 35),
    Salary = c(50000, 60000, 70000)
)

# Printing the data frame
print(my_data_frame)

# Output:
#      Name Age Salary
# 1   Alice  25  50000
# 2     Bob  30  60000
# 3 Charlie  35  70000

In this example, a data frame named my_data_frame is created with three columns: Name, Age, and Salary. Each column can contain a different type of data, such as character strings for names and numeric values for ages and salaries.

Data frames are one of the most commonly used data structures in R for data analysis, allowing you to manipulate and analyze tabular data efficiently.