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Learning to Program with MATLAB：Building GUI Tools.pdf
Cover
Title Page
Copyright Page
Contents
Preface
I: MATLAB Programming
1: Getting Started
1.1: Running the MATLAB IDE
Manipulating windows
1.2: MATLAB variables
Variable assignment statements
Variable names
Variable workspace
1.3: Numbers and functions
1.4: Documentation
1.5: Writing simple MATLAB scripts
1.6: A few words about errors and debugging
1.7: Using the debugger
2: Strings and Vectors
2.1: String basics
2.2: Using the disp command to print a variable's value
2.3: Getting information from the user
2.4: Vectors
2.5: Operations on vectors
2.6: Special vector functions
Statistical functions
2.7: Using rand and randi
3: Plotting
3.1: The plot command
3.2: Tabulating and plotting a simple function
3.3: Bar graphs and histograms
3.4: Drawing several plots on one graph
Multiple plots with a single plot command
Combining multiple plots with a hold command
3.5: Adding lines and text
4: Matrices
4.1: Entering and manipulating matrices
4.2: Operations on matrices
4.3: Solving linear systems: The backslash operator
Extended example: Solving circuit problems
4.4: Special matrix functions
5: Control Flow Commands
5.1: Conditional execution: The if statement
5.2: Logical expressions
5.3: Logical variables
5.4: for loops
5.5: while loops
5.6: Other control flow commands
Switch-case statement
Break statement (not recommended)
6: Animation
6.1: Basic animation
6.2: Animating function plots
6.3: Kinematics of motion
One-dimensional motion: Constant speed
Motion with constant acceleration
Time-marching dynamics: Nonconstant force
7: Writing Your Own MATLAB Functions
7.1: MATLAB function files
Declaring MATLAB functions
7.2: Function inputs and outputs
7.3: Local workspaces
7.4: Multiple outputs
7.5: Function files
7.6: Other functional forms
Subfunctions
Nested functions
Anonymous functions
8: More MATLAB Data Classes and Structures
8.1: Cell arrays
8.2: Structures
8.3: Complex numbers
8.4: Function handles
8.5: Other data classes and data structures
II: Building GUI Tools
9: Building a Graphical User Interface
9.1: Getting started with GUIDE
Saving the GUI to file
9.2: Starting an action with a GUI element
9.3: Communicating with GUI elements
Building SliderTool
Communicating with GUI elements from the command line
9.4: Synchronizing information with a GUI element
9.5: Key points from this chapter
10: Transforming a MATLAB Program into a GUI Tool
10.1: Creating a GUI tool step by step
10.2: Further GUI design considerations
11: GUI Components
III: Advanced Topics
12: More GUI Techniques
12.1: Waitbars
12.2: File dialogs
Saving and loading data in .mat files
A GUI interface to file names using uiputfile and uigetfile
12.3: Reading and writing formatted text files
12.4: The input dialog
12.5: The question dialog
12.6: Sharing application data between functions
12.7: Responding to keyboard input
12.8: Making graphic objects interactive
Mouse-click response
Mouse events and object dragging
12.9: Creating menus in GUIDE
13: More Graphics
13.1: Logarithmic plots
13.2: Plotting functions on two axes
13.3: Plotting surfaces
13.4: Plotting vector fields
13.5: Working with images
Importing and manipulating bit-mapped images
Placing images on surface objects
13.6: Rotating composite objects in three dimensions
14: More Mathematics
14.1: Derivatives
Derivatives of mathematical functions expressed as MATLAB functions
Derivatives of tabulated functions
14.2: Integration
Integrating tabulated functions
Integrating mathematical functions expressed as MATLAB functions
14.3: Zeros of a function of one variable
14.4: Function minimization
Finding a minimum of a function of one variable
Multidimensional minimization
Fitting to an arbitrary function by multidimensional minimization
Solving simultaneous nonlinear equations by multidimensional minimization
14.5: Solving ordinary differential equations
14.6: Eigenvalues and eigenvectors
Appendix A: Hierarchy of Handle Graphics Objects
Appendix B: Using LATEX Commands
Index
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Page i
LEARNING TO PROGRAM
WITH MATLAB
Building GUI Tools
Craig S. Lent
Department of Electrical Engineering
University of Notre Dame
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VP & PUBLISHER:
ASSOCIATE PUBLISHER:
EDITORIAL ASSISTANT:
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Joyce Poh
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Library of Congress Cataloging-in-Publication Data
Lent, Craig S., 1956–
Learning to program with MATLAB : building GUI tools / Craig S. Lent,
Department of Electrical Engineering, University of Notre Dame.
pages cm
Includes index.
ISBN 978-0-470-93644-3 (pbk. : acid-free paper) 1. Computer programming.
2. Visual programming (Computer science) 3. MATLAB.
(Computer systems)
I. Title.
4. Graphical user interfaces
QA76.6.L45
005.4'37—dc23
2013
Printed in the United States of America
10 9 8 7 6 5 4 3 2 1
2012041638
LENT
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To Tom Finke, Pat Malone, the late Katy McShane, and all
the other amazing teachers at the Trinity School campuses
in South Bend, IN, Eagan, MN, and Falls Church, VA.
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Contents
Preface
I MATLAB Programming
ix
1
1 Getting Started
3
1.1 Running the MATLAB IDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Manipulating windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 MATLAB variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Variable assignment statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Variable names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Variable workspace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.3 Numbers and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.4 Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.5 Writing simple MATLAB scripts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.6 A few words about errors and debugging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
1.7 Using the debugger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 14
2 Strings and Vectors
20
2.1 String basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.2 Using the disp command to print a variable’s value . . . . . . . . . . . . . . . . . . . . . . . 22
2.3 Getting information from the user . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 22
2.4 Vectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 23
2.5 Operations on vectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.6 Special vector functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Statistical functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
2.7 Using rand and randi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3 Plotting
34
3.1 The plot command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
3.2 Tabulating and plotting a simple function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
3.3 Bar graphs and histograms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
3.4 Drawing several plots on one graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Multiple plots with a single plot command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Combining multiple plots with a hold command . . . . . . . . . . . . . . . . . . . . . . . . . . 48
3.5 Adding lines and text . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
v
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vi Contents
4 Matrices
56
4.1 Entering and manipulating matrices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
4.2 Operations on matrices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
4.3 Solving linear systems: The backslash operator. . . . . . . . . . . . . . . . . . . . . .. . . . . . 65
Extended example: Solving circuit problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
4.4 Special matrix functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
5 Control Flow Commands
75
5.1 Conditional execution: The if statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
5.2 Logical expressions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
5.3 Logical variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
5.4 for loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
5.5 while loops . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
5.6 Other control flow commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Switch-case statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Break statement (not recommended) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
6 Animation
94
6.1 Basic animation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 95
6.2 Animating function plots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 99
6.3 Kinematics of motion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 103
One-dimensional motion: Constant speed . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 103
Motion with constant acceleration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Time-marching dynamics: Nonconstant force . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
7 Writing Your Own MATLAB Functions
117
7.1 MATLAB function files. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 118
Declaring MATLAB functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 119
7.2 Function inputs and outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
7.3 Local workspaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
7.4 Multiple outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
7.5 Function files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
7.6 Other functional forms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 121
Subfunctions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Nested functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Anonymous functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
8 More MATLAB Data Classes and Structures
137
8.1 Cell arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
8.2 Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
8.3 Complex numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 140
8.4 Function handles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 141
8.5 Other data classes and data structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141
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