1. Matlab Training Session 1:
Introduction to Matlab for Beginner
Course Website:

2. Course Outline
Each weekly session will independently cover a new and progressively more advanced Matlab topic
1. Introduction to Matlab and its Interface
2. Fundamentals (Operators)
3. Fundamentals (Flow)
4. Importing Data
5. Functions and M-Files
6. Plotting (2D and 3D)
7. Statistical Tools in Matlab
8. Analysis and Data Structures

3. An Introduction to Matlab and its Interface
Week 1: Lecture Outline
An Introduction to Matlab and its Interface

4. B. Understanding the Matlab Environment:
A. Why Matlab?
Some Common Uses for Matlab in Research
B. Understanding the Matlab Environment:
Navigating the Matlab Desktop
Commonly used Toolbox Components
Executing Commands
Help and Documentation
C. Using Matlab:
Matrices, Scalars and Arrays
Useful Commands
Searching and Indexing
Saving and Reloading Work
D. Exercises

5. Why Matlab? Matlab : Matrix Labratory Created in late 1970’s
Intended for used in courses in matrix theory, linear algebra and numerical analysis
Currently has grown into an interactive system and high level programming language for general scientific and technical computation

6. Why Matlab? Common Uses for Matlab in Research Data Acquisition
Multi-platform, Multi Format data importing
Analysis Tools (Existing,Custom)
Statistics
Graphing
Modeling

7. Why Matlab? Data Acquisition
A framework for bringing live, measured data into MATLAB using PC-compatible, plug-in data acquisition hardware

8. Why Matlab? Multi-platform, Multi Format data importing
Data can be loaded into Matlab from almost any format and platform
Binary data files (eg. REX, PLEXON etc.)
Ascii Text (eg. Eyelink I, II)
Analog/Digital Data files PC
UNIX
Subject 1 143
Subject 2 982
Subject 3 87 …

9. Why Matlab? Analysis Tools
A Considerable library of analysis tools exist for data analysis
Provides a framework for the design, creation, and implementation of any custom analysis tool imaginable

10. Why Matlab? Statistical Analysis
A considerable variety of statistical tests available including:
TTEST
Mann-Whitney Test
Rank Sum Test
ANOVAs
Linear Regressions
Curve Fitting

11. Why Matlab?
Graphing
A Comprehensive array of plotting options available from 2 to 4 dimensions
Full control of formatting, axes, and other visual representational elements

12. Why Matlab?
Modeling
Models of complex dynamic system interactions can be designed to test experimental data

13. Understanding the Matlab Environment:
Navigating the Matlab Desktop
Commonly Used Toolboxes
Executing Commands
Basic Calculation Operators:
+ Addition
- Subtraction
* Multiplication
/ Division
^ Exponentiation

14. Using Matlab Solving equations using variables Expression language
Expressions typed by the user are interpreted and evaluated by the Matlab system
Variables are names used to store values
Variable names allow stored values to be retrieved for calculations or permanently saved
Variable = Expression Or
Expression
**Variable Names are Case Sensitive!
>> x = 6
x = 6
>> y = 2
y = 2
>> x + y
Ans = 8
>> x * y
Ans = 12
>> x / y
Ans = 3
>> x ^ y
Ans = 36

15. Using Matlab Working with Matrices
Matlab works with essentially only one kind of object, a rectangular numerical matrix
A matrix is a collection of numerical values that are organized into a specific configuration of rows and columns.
The number of rows and columns can be any number
Example
3 rows and 4 columns define a 3 x 4 matrix having 12 elements

16. Using Matlab Working with Matrices
Matlab works with essentially only one kind of object, a rectangular numerical matrix
A matrix is a collection of numerical values that are organized into a specific configuration of rows and columns.
The number of rows and columns can be any number
Example
3 rows and 4 columns define a 3 x 4 matrix having 12 elements
A scalar is a single number and is represented by a 1 x 1 matrix in matlab.
A vector is a one dimensional array of numbers and is represented by an n x 1 column vector or a 1 x n row vector of n elements

17. Using Matlab Working with Matrices
c = or c = [5.66] c is a scalar or a 1 x 1 matrix 
x = [ 3.5, 33.22, 24.5 ] x is a row vector or a 1 x 3 matrix 
x1 = [ 2 5 3
-1] x1 is column vector or a 4 x 1 matrix
A = [
] A is a 4 x 3 matrix

18. Using Matlab Working with Matrices
Spaces, commas, and semicolons are used to separate elements of a matrix
Spaces or commas separate elements of a row
[ ] or [1,2,3,4]
Semicolons separate columns
[1,2,3,4;5,6,7,8;9,8,7,6] = [ ]

19. Using Matlab Indexing Matrices
A m x n matrix is defined by the number of m rows and number of n columns
An individual element of a matrix can be specified with the notation A(i,j) or Ai,j for the generalized element, or by A(4,1)=5 for a specific element.
Example:
>> A = [ ; ] A is a 2 x 4 matrix
>> A(1,2)
Ans 2
The colon operator can be used to index a range of elements
>> A(1, 1:3)
Ans 1 2 4

20. Using Matlab Indexing Matrices
Specific elements of any matrix can be overwritten using the matrix index
Example:
A = [ ]
>> A(2,1) = 9
Ans ]

21. Using Matlab Matrix Shortcuts
The ones and zeros functions can be used to create any m x n matrices composed entirely of ones or zeros
Example
a = ones(2,3)
a = [1 1 1
1 1 1]
b = zeros(1,5)
b = [ ]

22. Using Matlab Data Types and Formats
The semicolon operator determines whether the result of an expression is displayed
who lists all of the variables in your matlab workspace
whos list the variables and describes their matrix size

23. Using Matlab Saving your Work To save data to a *.mat file:
Typing ‘save filename’ at the >> prompt and the file ‘filename.mat’ will be saved to the working directory
Select Save from the file pull down menu
To reload a *.mat file
1. Type ‘load filename’ at the >> prompt to load ‘filename.mat’
(ensure the filename is located in the current working directory)
2. Select Open from the file pull down menu and manually find the datafile

24. Getting Help Help and Documentation Digital Hard Copy
Updated online help from the Matlab Mathworks website:
Matlab command prompt function lookup
Built in Demo’s
Websites
Hard Copy
Books, Guides, Reference
The Student Edition of Matlab pub. Mathworks Inc.

25. Exercises
Enter the following Matrices in matlab using spaces, commas, and semicolons to separate rows and columns:
A =
B =
D =
C =
D =
E = a 5 x 9 matrix of 1’s

26. Exercises
Use the who and whos functions to confirm all of the variables and matrices in the work space are present and correct
A =
B =
E =
C =
D =
E = a 5 x 9 matrix of 1’s

27. Exercises Change the following elements in each matrix: 76 76 A = B =
D = 76
C =
D = 76
E = a 5 x 9 matrix of 1’s 76