Vector indexing (1-based) in R Programming - Mini Project: Build & Apply

Vector indexing (1-based)

📖 Scenario: You are working with a list of daily temperatures recorded over a week. You want to access specific days' temperatures using their position in the list.

🎯 Goal: Learn how to access elements in a vector using 1-based indexing in R.

📋 What You'll Learn

Create a vector with exact temperature values

Create a variable to hold the index of the day to access

Use vector indexing with the variable to get the temperature

Print the accessed temperature

💡 Why This Matters

🌍 Real World

Accessing specific data points from a list of measurements, like daily temperatures, is common in data analysis and reporting.

💼 Career

Understanding vector indexing is essential for data scientists, statisticians, and anyone working with R for data manipulation.

1

Create the temperature vector

Create a vector called temps with these exact values: 23, 25, 22, 20, 24, 26, 21.

R Programming

# Create the vector temps with the given values
# Your code here

Need a hint?

Use the c() function to create a vector with the given numbers.

2

Set the day index

Create a variable called day_index and set it to 3 to represent the third day.

R Programming

temps <- c(23, 25, 22, 20, 24, 26, 21)
# Create the variable day_index and set it to 3
# Your code here

Need a hint?

Assign the number 3 to the variable day_index.

3

Access the temperature for the day

Create a variable called temp_for_day that gets the temperature from temps at the position given by day_index using vector indexing.

R Programming

temps <- c(23, 25, 22, 20, 24, 26, 21)
day_index <- 3
# Use vector indexing to get the temperature for day_index and store it in temp_for_day
# Your code here

Need a hint?

Use square brackets [] with day_index to get the element from temps.

4

Print the temperature

Print the value of temp_for_day to display the temperature for the third day.

R Programming

temps <- c(23, 25, 22, 20, 24, 26, 21)
day_index <- 3
temp_for_day <- temps[day_index]
# Print the temperature for the day
# Your code here

Need a hint?

Use the print() function to show the value of temp_for_day.