Installing MATLAB and the IDE

Analogy categoryAnalogies

Obtaining MATLAB starts with a MathWorks Account tied to a license — either an Individual license purchased directly, a Campus-Wide license provided by a university, or a Home-Use license for personal, non-commercial use — and the installer authenticates against that license during setup, either online or via an offline license file for machines without internet access.

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Cricket analogy: Getting a MATLAB license is like registering for an ICC-sanctioned tournament — you need valid credentials tied to your board before you're allowed onto the field, whether that's an individual player pass or a full team's campus-wide accreditation.

Running the Installer

Running the installer prompts you to sign in, accept the license agreement, choose an installation folder, and then select which toolboxes to install from a checklist — a base MATLAB install is a few gigabytes, but adding toolboxes like Simulink, Deep Learning Toolbox, or the Image Processing Toolbox can push the total past 20 GB, so it's worth deselecting toolboxes you won't use to save disk space and install time.

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Cricket analogy: Choosing toolboxes during install is like a captain picking their playing XI from a wider squad — you don't field every specialist you own, only the ones relevant to today's pitch conditions.

Tour of the Desktop IDE

The MATLAB desktop is organized into several docked panels by default: the Command Window where you type and execute statements interactively, the Editor where you write and save .m script and function files, the Workspace panel showing every variable currently in memory with its size and type, the Current Folder browser for navigating files, and the Command History panel that logs every statement you've run, which you can double-click to re-execute.

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Cricket analogy: The Workspace panel showing every live variable is like a scoreboard displaying every batter's current stats mid-innings — you can see exactly what's in play at any moment, the way you'd track a player's live strike rate.

matlab

% Check MATLAB version and installed toolboxes
ver

% Add a project folder (and its subfolders) to the search path
addpath(genpath('C:\Projects\MyMatlabCode'));
savepath;  % persist the path change for future sessions

% Confirm the folder is now visible
which myCustomFunction

Use the ver command in the Command Window at any time to see your exact MATLAB release (e.g., R2024b) and which toolboxes are licensed and installed — this is the first thing to check when a function like imread or fitlm reports 'undefined function', since it usually means the required toolbox isn't installed or licensed.

Setting the Path and Preferences

New scripts and functions are only visible to MATLAB if their containing folder is on the search path, which you manage through the Home tab's 'Set Path' dialog or the addpath function; MATLAB also lets you customize editor themes, font size, and default toolbox behavior through Home > Preferences, and install community packages via the Add-On Explorer without leaving the IDE.

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Cricket analogy: Adding a folder to MATLAB's path is like registering a domestic player for the IPL auction pool — until they're on the list, no franchise can call them up, no matter how good they are.

MATLAB licenses can be seat-limited (network/concurrent licenses) or time-limited (annual renewals); if the software suddenly refuses to start with a 'license checkout failed' error, don't reinstall — check with your license administrator first, since reinstalling won't fix an expired or exhausted license pool.

MATLAB installation requires a MathWorks account and a valid license (individual, campus-wide, or home-use).
You can selectively install only the toolboxes you need to save disk space and install time.
The desktop IDE's core panels are the Command Window, Editor, Workspace, Current Folder, and Command History.
Use addpath and savepath (or Home > Set Path) to make your own script folders visible to MATLAB.
The ver command lists your MATLAB release and every installed toolbox.
Editor themes, fonts, and toolbox defaults are configured under Home > Preferences.
Network and time-limited licenses can expire independently of the software installation itself.

Practice what you learned

1. What must you have before installing MATLAB?

2. Why might you deselect certain toolboxes during installation?

3. Which panel in the MATLAB desktop lists every variable currently in memory with its size and type?

4. Which command lists your MATLAB release and which toolboxes are licensed and installed?

5. What is the correct way to make a personal script folder visible to MATLAB permanently?

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Installing MATLAB and the IDE