MATLAB Compiler overview - Mini Project: Build & Apply

MATLAB Compiler Overview

📖 Scenario: You are working as a MATLAB user who wants to share your MATLAB program with friends who do not have MATLAB installed. You will learn how to prepare your MATLAB code for compilation using MATLAB Compiler.

🎯 Goal: Build a simple MATLAB script and prepare it for compilation by setting up the main function, adding a configuration variable, applying core logic, and displaying the output.

📋 What You'll Learn

Create a MATLAB function file with a simple data structure

Add a configuration variable to control behavior

Implement core logic using a loop

Display the final output using disp

💡 Why This Matters

🌍 Real World

Sharing MATLAB programs with users who do not have MATLAB installed by compiling them into standalone applications.

💼 Career

Understanding MATLAB Compiler helps engineers and scientists distribute their MATLAB tools easily to colleagues and clients.

1

Create the initial data structure

Create a MATLAB function called compileDemo that defines a variable numbers as a row vector with the values [10, 20, 30, 40, 50].

MATLAB

function compileDemo()
% Your code here

Hint

Use square brackets [] to create a vector in MATLAB.

2

Add a configuration variable

Inside the compileDemo function, add a variable called threshold and set it to 25.

MATLAB

function compileDemo()
numbers = [10, 20, 30, 40, 50];
% Your code here

Hint

Just assign the number 25 to the variable threshold.

3

Apply core logic with a loop

Add a variable countAbove initialized to 0. Then use a for loop with the variable i to iterate over each element in numbers. Inside the loop, increase countAbove by 1 if the current number is greater than threshold.

MATLAB

function compileDemo()
numbers = [10, 20, 30, 40, 50];
threshold = 25;
% Your code here

Hint

Use length(numbers) to get the number of elements and if to check the condition.

4

Display the result

Use disp to display the text 'Count of numbers above threshold:' followed by the value of countAbove.

MATLAB

function compileDemo()
numbers = [10, 20, 30, 40, 50];
threshold = 25;
countAbove = 0;
for i = 1:length(numbers)
    if numbers(i) > threshold
        countAbove = countAbove + 1;
    end
end
% Your code here

Hint

Use num2str to convert the number to text for display.

Practice

1. What is the main purpose of the MATLAB Compiler?

easy

A. To create standalone applications from MATLAB code

B. To edit MATLAB scripts interactively

C. To debug MATLAB code line by line

D. To convert MATLAB code into Python code

Solution

1. Step 1: Understand MATLAB Compiler's function

   MATLAB Compiler is designed to package MATLAB programs into standalone apps or libraries.

2. Step 2: Compare options with this function

   Only To create standalone applications from MATLAB code describes creating standalone applications, which matches the compiler's purpose.

3. Final Answer:

   To create standalone applications from MATLAB code -> Option A

4. Quick Check:

   MATLAB Compiler = standalone apps [OK]

Hint: Remember: Compiler makes apps, not edits or debugging [OK]

Common Mistakes:

• Confusing compiler with editor or debugger
• Thinking it converts MATLAB to other languages
• Assuming it requires MATLAB installed to run compiled apps

2. Which of the following is the correct command to compile a MATLAB function myfunc.m into a standalone application?

easy

A. run myfunc.m

B. compile myfunc.m

C. build myfunc.m

D. mcc -m myfunc.m

Solution

1. Step 1: Recall MATLAB Compiler command syntax

   The MATLAB Compiler uses the mcc command with flags; -m creates standalone apps.

2. Step 2: Match options with correct syntax

   mcc -m myfunc.m uses mcc -m myfunc.m, which is the correct command to compile a function into an app.

3. Final Answer:

   mcc -m myfunc.m -> Option D

4. Quick Check:

   Compile command = mcc -m [OK]

Hint: Use mcc -m to compile MATLAB apps [OK]

Common Mistakes:

• Using generic words like 'compile' or 'build' instead of mcc
• Trying to run instead of compile
• Omitting the -m flag for standalone apps

3. What will happen if you run a compiled MATLAB application on a computer without MATLAB installed but with MATLAB Runtime installed?

medium

A. The application will open MATLAB editor

B. The application will run normally using MATLAB Runtime

C. The application will run but with limited features

D. The application will fail because MATLAB is required

Solution

1. Step 1: Understand MATLAB Runtime role

   Compiled MATLAB apps run on computers without MATLAB if MATLAB Runtime is installed.

2. Step 2: Evaluate options based on this fact

   The application will run normally using MATLAB Runtime states the app runs normally using MATLAB Runtime, which is correct.

3. Final Answer:

   The application will run normally using MATLAB Runtime -> Option B

4. Quick Check:

   MATLAB Runtime enables running compiled apps [OK]

Hint: MATLAB Runtime runs compiled apps without MATLAB [OK]

Common Mistakes:

• Assuming MATLAB must be installed to run compiled apps
• Thinking features are limited without MATLAB
• Confusing MATLAB Runtime with MATLAB editor

4. You tried to compile app.m using mcc app.m but got an error. What is the likely problem?

medium

A. MATLAB Runtime is not installed

B. The file app.m does not exist

C. Missing the -m flag to specify standalone app

D. You need to run run app.m instead

Solution

1. Step 1: Check the compile command syntax

   The mcc command requires flags like -m to specify output type.

2. Step 2: Identify missing flag causing error

   Using mcc app.m without -m causes error because output type is unclear.

3. Final Answer:

   Missing the -m flag to specify standalone app -> Option C

4. Quick Check:

   mcc needs -m flag for apps [OK]

Hint: Always include -m flag when compiling apps [OK]

Common Mistakes:

• Forgetting the -m flag
• Assuming MATLAB Runtime affects compilation
• Confusing compile and run commands

5. You want to share a MATLAB program with a friend who does not have MATLAB installed. Which steps should you follow to share your program using MATLAB Compiler?

hard

A. Compile your MATLAB code into a standalone app using mcc -m, then send the app and ask your friend to install MATLAB Runtime

B. Send your MATLAB script file and ask your friend to install MATLAB

C. Convert your MATLAB code to Python and send the Python script

D. Send your MATLAB code and ask your friend to install MATLAB Compiler

Solution

1. Step 1: Identify how to share MATLAB code without MATLAB

   MATLAB Compiler creates standalone apps that run without MATLAB but require MATLAB Runtime.

2. Step 2: Choose correct sharing method

   Compile your MATLAB code into a standalone app using mcc -m, then send the app and ask your friend to install MATLAB Runtime correctly describes compiling with mcc -m and sharing the app plus MATLAB Runtime installation.

3. Final Answer:

   Compile your MATLAB code into a standalone app using mcc -m, then send the app and ask your friend to install MATLAB Runtime -> Option A

4. Quick Check:

   Compile + MATLAB Runtime = share without MATLAB [OK]

Hint: Compile app and share with MATLAB Runtime for easy use [OK]

Common Mistakes:

• Sending raw MATLAB scripts without MATLAB installed
• Expecting friend to install MATLAB Compiler
• Trying to convert code manually to other languages