This document provides an introduction to MATLAB and GUI development in MATLAB. It discusses key aspects of the MATLAB environment including the command window, workspace, and variable types. It also covers vectors, matrices, matrix operations, flow control, loops, functions, and GUI development using GUIDE and App Designer. The document provides examples of creating GUI components, setting properties, callbacks, and displaying images to demonstrate basic MATLAB and GUI programming concepts.

1. INTRO TO MATLAB + GUI
By Asjad Ali
(P146100)

2. INTRODUCTION
 MATLAB stands for Matrix Laboratory.
 MATLAB had many functions and toolboxes
 Integration
 Image Processing
 Linear Algebra
 …
 Is high level language
 Solves computing problems
 in a fraction of the time
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3. MATLAB SCREEN
 Command Window
 type commands
 Current Directory
 View folders and m-files
 Workspace
 View program variables
 Double click on a variable
to see it in the Array Editor
 Command History
 view past commands
 save a whole session
using diary
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4. VARIABLE
No need for types
int a = 10;
float pie = 3.1415;
All variable are of double precision unless specified
pie = 3.1415
s = 123
All variable are 1x1 matrices
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5. ARRAY
a vector
 x = [1 2 5 1]
 x = 1 2 5 1
a matrix
 x = [1 2 3; 5 1 4; 3 2 -1]
transpose
 y = x’
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6. VECTOR/MATRIX GENERATION
t = [1:10]
 t = 1 2 3 4 5 6 7 8 9 10
x = [1:4; 5:8]
x =
 1 2 3 4
 5 6 7 8
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7. MATRIX INDEX
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8. MATRIX OPERATIONS
+ addition
- subtraction
* multiplication
/ division
^ power
‘ complex conjugate transpose
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9. FLOW CONTROL
if ((a>3) & (b==5))
Some matlab Commands;
elseif (a < 2)
Some matlab commands;
else
Some matlab commands;
end
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10. LOOPS
for i=1:100
Matlab Commands;
end
while (condition)
Matlab Commands;
end
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11. FUNCTIONS
 No return keyword
 function out1=fname(in1,in2,in3)
 Some commands
 function [out1,out2]=name(in1,in2)
 EXAMPLE
 function [out1, out2] = sumprod(array)
out1 = sum(array)
out2 = prod(array)
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12. GUI APPLICATION
 Starting new App
 Home > New > App > GUIDE
 Home > New > App > App Designer
 GUIDE
 Procedural
 App Designer
 Object Oriented
 Both have same components
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13. GUIDE QUICK START
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14. ADD COMPONENTS
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15. CALLBACK
Catchable event of Button
Callback (OnClick)
Create –When button is created
Delete – button is delete
ButtonDown
KeyPress
Execute when event/callback occur
Jumps to that code
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16. COMPONENT INSPECTOR
• Set String Property of Button
• set(handles.pushbutton1,‘String',‘test');
• Get String Property of Button
• get(handles.pushbutton1,‘String');
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17. SOME USEFULTIPS
 Open Dialog Box
 [filename,pathname] = uigetfile('*.bmp;','Select bmp file');
 Save Dialog Box
 [filename, pathname] = uiputfile('*.bmp;','Save Image', filename);
 sum – Add all element of matrix or vector
 mean – Return mean of matrix or vector
 strcat – String concatenation (+ operator for string not supported)
 a(:) – Return Nx1 matrix considering a multi-dimensional.
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18. SHOWING IMAGE
Add Axes component in GUI
Call imshow([…])
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19. THANKYOU!

20. REFERENCES
 www.eee.metu.edu.tr/~yozbek/PDF430/Introduction%20to%20Matlab.ppt
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