Data Tools First 2015 - MATLAB

1. MATLAB
(Data Tools First)
19 March 2015

2. Contents
• Introduction to MATLAB
• What/Why MATLAB?
• Applications and Use Cases
• Built-in Functionality and Toolbox
• Demo Programs
• Visualization
• Signal Processing
• Pattern Recognition
• Statistics
• Placement Test
• Why
• Follow-ups
• First compensation lecture on MATLAB (from 13:00)
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3. What is MATLAB?
• MATLAB (MATrix LABoratory)
• A High level programming language.
• Assembly / Machine coding : Low level
• C, C++, Java, Python,… : High level (Complied Language)
• MATLAB, Basic, Javascript, Python, R… : High level (Interpreted Language)
• An interactive technical computing environment
• Algorithm Development
• Data Analysis
• Numerical Computation
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4. MATLAB Product Family
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5. Why MATLAB?
• A good choice for program development because:
• Easy to Use
• Quick to learn
• Good documentation
• A Big library for functions
• Excellent display capabilities
• Widely used for teaching and research in universities and industry
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6. Application and Use Cases
• Numerical Computation
• Algebra, statistics, optimization,….
• Signal and Image Processing
• Communication System
• Control System
• Financial Modeling and Analysis
• Computational Biology
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7. Algorithm/Visualization
• Supports vectors and matrix operations
• Supports data analysis process
• Supports 2-D / 3-D plotting
• Support audio & video
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8. Built-in Functionality and Toolbox
• http://www.mathworks.com/products/?s_tid=gn_ps
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9. Demo Programs (from RWDA)
• Visualization
• Animated 3D object
• Signal Processing
• Filtering
• audio
• Regression
• GPS
• Pattern Recognition
• K-means classification
• hand-writing detection
• Statistics
• Gaussian Mixture Model (GMM) RWDA: Advanced Lectures on Real-World Data Analysis
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10. MATLAB
Placement Test
Data Tools First
19 March 2015

11. Purpose
• MATLAB will be used as the main tool for program in
• Advanced Lectures on Real-World Data Analysis (fall 2015)
• Everybody MUST have programming skill using MATLAB
• There will be compensation lectures on MATLAB programming from
April to September (Follow-up)
• April - May: Elementary (Basic programming, and Mathematics, Evaluation)
• June - July: Intermediate (Programming using Tool boxes)
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12. If you are expert in MATLAB and Math
• Need to take the test
• No need to take compensation lectures
• You do not need to stay for the compensation lecture
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13. If you have some skill in MATLAB and Math
• Need to take the test
• Attend the compensation lectures from June (Intermediate level)
• You do not need to stay for the compensation lecture (elementary)
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14. If you are not familiar with MATLAB and Math
• No need to take the test
• Attend the compensation lectures
• First compensation lecture is from 13:00 (DTF)
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15. Problem 1
• Create matrix A with elements from 1 to 81, dimension 9 x 9
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1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18
19 20 21 22 23 24 25 26 27
28 29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54
55 56 57 58 59 60 61 62 63
64 65 66 67 68 69 70 71 72
73 74 75 76 77 78 79 80 81

16. Problem 2 - I
• Extract M1 and M2 and calculate
• M1 x M2
• M1 + M2
• Extract M3 and M4 and calculate
• Transposition Matrix of M3 (M3T)
• M4 + M3T
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1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18
19 20 21 22 23 24 25 26 27
28 29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54
55 56 57 58 59 60 61 62 63
64 65 66 67 68 69 70 71 72
73 74 75 76 77 78 79 80 81
M2
M1

17. Problem 2 - II
• Extract M1 and M2 and calculate
• M1 x M2
• M1 + M2
• Extract M3 and M4 and calculate
• Transposition Matrix of M3 (M3T)
• M4 + M3T
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1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18
19 20 21 22 23 24 25 26 27
28 29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54
55 56 57 58 59 60 61 62 63
64 65 66 67 68 69 70 71 72
73 74 75 76 77 78 79 80 81
M4
M3

18. Problem 3
• Given Matrix A, using (for and if) commands do the following:
• (I) Output a 9 x9 Matrix that has values of 0 and 1
• 1: if the element of Matrix A is dividable by 4
• 0: otherwise
• (ii) Output a 9 x9 Matrix that has values of 0 and 1
• 1: if the element of Matrix A is dividable
by 4 and not dividable by 5
• 0: otherwise
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0 0 0 1 0 0 0 1 .
0 0 1 . . .
. . . . .
. . . . .
. .

19. Problem 4
• (I) Create a sine wave for variable x
• Amplitude = 5
• x = {0, 1, 2, …, 360}
• (II) Plot the sine wave
• Add title
• Add axis labels
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20. Reference
• Textbook
• Getting Started with MATLAB
A quick Introduction for Scientists and Engineers
Author: Pudra Pratap
Oxford University Press, ISBN-13: 978-0199731244
• Others (MathWorks, MATLAB)
• http://www.mathworks.com/help/matlab/getting-started-with-matlab.html
• http://www.mathworks.com/help/pdf_doc/matlab/getstart.pdf
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