Numeric and character vectors in R Programming

Introduction

Vectors are like lists that hold many items of the same type. Numeric vectors hold numbers, and character vectors hold words or letters.

When you want to store a list of numbers, like ages or scores.

When you need to keep a list of names or words together.

When you want to do math or text operations on a group of values.

When you want to organize data in a simple, easy-to-use way.

Syntax

R Programming

numeric_vector <- c(1, 2, 3, 4)
character_vector <- c("apple", "banana", "cherry")

The c() function combines values into a vector.

All items in a vector must be the same type: all numbers or all characters.

Examples

Create a numeric vector numbers and a character vector words.

R Programming

numbers <- c(10, 20, 30, 40)
words <- c("cat", "dog", "bird")

If you mix numbers and characters, R converts all to characters.

R Programming

mixed <- c(1, "two", 3)

Create empty numeric and character vectors with fixed lengths.

R Programming

empty_numeric <- numeric(5)
empty_character <- character(3)

Sample Program

This program creates a numeric vector and a character vector, then prints both.

R Programming

numeric_vector <- c(5, 10, 15)
character_vector <- c("red", "green", "blue")

print(numeric_vector)
print(character_vector)

Important Notes

Vectors are the basic building blocks for data in R.

Use typeof() to check the type of a vector.

Mixing types in a vector causes automatic conversion to a common type.

Summary

Numeric vectors hold numbers, character vectors hold text.

Use c() to create vectors.

All elements in a vector must be the same type.