R has its own quirks and conventions. This tutorial covers the fundamental syntax rules that make R different from other programming languages.
R Syntax and Basics
1. Assignment Operators
R has two main assignment operators:
# Traditional arrow assignment
x <- 5
# Equals sign (less common but works)
y = 10Best Practice: Use <- for assignment to avoid confusion with function arguments.
Assignment Quiz
Which assignment operator is preferred in R?
2. Basic Operations
R handles math operations intuitively:
# Arithmetic
3 + 5 * 2 # Follows standard order of operations
# Exponentiation
2^3 # Returns 8, not 6 like some languages
# Integer division
7 %/% 2 # Returns 3Operations Quiz
What does 7 %/% 2 return?
3. Vectors - R's Workhorse
Vectors are fundamental in R. Create them with c():
# Numeric vector
numbers <- c(1, 2, 3, 4, 5)
# Character vector
fruits <- c("apple", "banana", "cherry")
# Sequence vector
sequence <- 1:5 # Same as c(1,2,3,4,5)Vectors Quiz
How do you create a vector in R?
4. Data Frames
The primary structure for datasets in R:
# Create a data frame
df <- data.frame(
name = c("Alice", "Bob", "Charlie"),
age = c(25, 30, 35),
employed = c(TRUE, FALSE, TRUE)
)
# View first rows
head(df)Data Frames Quiz
What function creates a data frame?
5. Basic Functions
Creating and using functions in R:
# Define a function
calculate_mean <- function(x) {
sum(x) / length(x)
}
# Use the function
calculate_mean(c(1, 2, 3)) # Returns 2Functions Quiz
What's the correct way to define a function?
0 Interaction
0 Views
0 Likes
×
