MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Specifications download pdf (Page 127)

GUI with Multiple Axes

5-3

GUI with Multiple Axes

This example creates a GUI that contains two axes for plotting data. For

simplicity, this example obtains data by evaluating an expression using

parameters entered by the user.

Techniques Used in the Example

GUI-building techniques illustrated in this example include:

•Controlling which axes is the target for plotting commands.

•Using edit text controls to read numeric input and MATLAB expressions.

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Computation 1
Visualization 1
Programming 1
How to Contact The MathWorks: 2
Contents 3
MATLAB GUIs 4
GUIDE Layout Tools 5
Getting Started with 9
1 Getting Started with GUIDE 10
Show names in 11
Getting Started Example 13
View an Animated Demo 15
1. Set the GUI Figure Size 15
2. Add the Components 17
3. Align the Objects 18
Push Buttons and Static Text 19
Popup Menu Items 20
Tag and Callback Properties 21
5. Activate the GUI 24
The Application M-File 24
Example – Testing the GUI 27
1. Add the File Menu 28
2. Set the Label and Tag 29
3. Add the Items 30
File Menu Callback 32
The Print Item Callback 33
The Close Item Callback 33
User Interface Controls 34
Properties to Set 34
Programming the Callback 34
Toggle Buttons 35
Radio Buttons 35
Checkboxes 37
Edit Text 37
Designing a Slider 40
Triggering Callback Execution 40
Single or Multiple Selection 41
Selection Type 41
List Box Examples 42
Programming the Popup Menu 43
Plotting to Axes in GUIs 44
GUIs with Multiple Axes 44
Axes Callbacks 44
2 MATLAB GUIs 48
Introduction 48
Creating GUIs with GUIDE 49
The Implementation of a GUI 49
Updating Callbacks 52
Resize Behavior 56
Property Settings 56
Command-Line Accessibility 58
HandleVisibility – Callback 59
HandleVisibility – Off 59
HandleVisibility – On 59
IntegerHandle 59
The Generated M-File 61
Naming Callback Subfunctions 61
Callback Function Syntax 61
Using Save As 67
Getting Everything Right 67
Avoiding Problems 68
<automatic> to 69
Closebutton_Callback 69
GUI Layout Tools 72
Activating the Figure 75
Figure Context Menus 77
GUI Component Context Menus 78
Align Options 81
Distribute Options 82
Creating Guide Lines 83
Layout menu 85
Inspect Properties from the 87
Creating a Menu 90
Specifying Menu Properties 90
Adding Items to the Menu 91
Laying Out Three Menus 92
Defining Context Menus 95
Creating the Parent Menu 96
Label and Tag properties 97
UIContextMenu property 97
Saving the GUI 99
What a FIG-File Contains 99
Handle Remapping 99
3 GUIDE Layout Tools 100
Opening FIG-Files 100
Programming GUIs 101
4 Programming GUIs 102
GUI Programming Topics 102
Callback property 105
Opening the FIG-File 107
Positioning the GUI Onscreen 108
structure for 109
Save the updated structure 111
% store the changes 112
Saving the Handles Structure 112
Using the Default System Font 115
Specifying a Fixed-Width Font 116
Using a Specific Font Name 116
System-Dependent Units 117
Types of Callbacks 118
Which Callback Executes 119
Adding A Callback 119
Using Modal Figure Windows 123
Application Examples 125
5 Application Examples 126
GUI with Multiple Axes 127
Identifying the Axes 129
Application Option Settings 130
Getting User Input 131
% Get user input from GUI 131
Calculating Data 131
Targeting Specific Axes 131
Dialog Requirements 133
Launching the Dialog 134
Wait for User Input 134
Making the Dialog Modal 135
Launch the Dialog 137
Executing a Callback 139
Close button’s callback 141
List Box Directory Reader 142
Implementing the GUI 143
Loading the List Box 145
Opening Unknown File Types 147
Reading Workspace Variables 149
Enabling Multiple Selection 150
Changing the Controller Gains 153
Running the Simulation 153
Plotting the Results 154
Removing Results 154
Application Options Settings 154
Slider Callback 155
Plotting the Results Data 159
The GUI Help Button 161
An Address Book Reader 164
Validating the MAT-file 167
Check_And_Load Code Listing 167
The Contact Name Callback 169
The Contact Phone # Callback 171
Paging Forward or Backward 173
Code Listing 173
The Create New Menu 175
Changing the Width 176
Changing the Height 176

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MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Specifications Page 127

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