Logical values in MATLAB - Mini Project: Build & Apply

Logical values

📖 Scenario: Imagine you are working with a list of temperatures recorded over a week. You want to find out which days were hot, meaning the temperature was above 30 degrees Celsius.

🎯 Goal: You will create a logical array that shows true for days with temperatures above 30 and false otherwise.

📋 What You'll Learn

Create a variable called temperatures with the exact values: [28, 31, 29, 35, 27, 33, 30]

Create a variable called threshold and set it to 30

Create a logical array called isHot that is true where temperatures are greater than threshold

Display the isHot array using disp

💡 Why This Matters

🌍 Real World

Logical arrays are useful to filter data, such as finding days with high temperatures or selecting items that meet certain conditions.

💼 Career

Understanding logical values is important for data analysis, engineering, and scientific computing jobs where decision-making based on conditions is common.

1

Create the temperature data

Create a variable called temperatures and assign it the array [28, 31, 29, 35, 27, 33, 30].

MATLAB

% Create the temperatures array
% Your code here

Need a hint?

Use square brackets [] to create an array in MATLAB.

2

Set the temperature threshold

Create a variable called threshold and set it to 30.

MATLAB

temperatures = [28, 31, 29, 35, 27, 33, 30];
% Create the threshold variable
% Your code here

Need a hint?

Just assign the number 30 to the variable threshold.

3

Create the logical array

Create a logical array called isHot that is true where temperatures are greater than threshold.

MATLAB

temperatures = [28, 31, 29, 35, 27, 33, 30];
threshold = 30;
% Create the logical array isHot
% Your code here

Need a hint?

Use the greater than operator > to compare each temperature to the threshold.

4

Display the logical array

Use disp to display the isHot array.

MATLAB

temperatures = [28, 31, 29, 35, 27, 33, 30];
threshold = 30;
isHot = temperatures > threshold;
% Display the isHot array
% Your code here

Need a hint?

Use disp(isHot) to show the logical array in the command window.