What is the R if-else Statement?

The if-else statement in R is a control structure that allows you to execute different blocks of code depending on whether a condition is TRUE or FALSE. The basic syntax of an if-else statement is:

if (condition) {
    # Code to execute if the condition is TRUE
} else {
    # Code to execute if the condition is FALSE
}

The if block executes the code inside it if the condition is TRUE. If the condition is FALSE, the code inside the else block is executed.

# Example of an if-else statement
x <- 10

if (x > 5) {
    print("x is greater than 5")
} else {
    print("x is not greater than 5")
}

In this example, since x is greater than 5, the first block of code is executed, and “x is greater than 5” is printed. If x were less than or equal to 5, the else block would execute.

The if-else statement is fundamental in controlling the flow of R programs, allowing for decision-making based on various conditions.