How to create GUI's in MatLAB - PowerPoint PPT Presentation

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How to create GUI's in MatLAB

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  1. How to create GUI's in MatLAB Rigo Dicochea

  2. Introduction • Graphical User Interface (GUI) • MatLab provides Graphical User Interface Development Environment(GUIDE) • A MatLab tool used to create GUI’s • Decide between using GUIDE or writing the code from scratch • GUI’s give the user a simplified experience running a program • Associates a “function(s)” with components of the GUI

  3. Graphical User Interface • GUI should be consistent and easily understood. • Provide the user with the ability to use a program without having to worry about commands to run the actual program • Possible components of a GUI • Pushbuttons • Sliders • List boxes • Menus….etc Sample GUI

  4. 3 Essential Characteristics • Components – • Graphical Components • pushbuttons, edit boxes, sliders, labels, menus, etc… • Static Components • Frames, text strings,… • Both are created using the function uicontrol • Figures – components are contained in figures • Callbacks – The functions which perform the required action when a component is pushed

  5. GUIDE Properties • Allows the user to drag and drop components that he/she wants in the “layout” area of the GUI • All “guide” GUI’s start with an opening function • Callback is performed before user has access to GUI • Saving automatically generates an .m file and .fig file • .fig contains the binary GUI layout and .m contains the code that controls the GUI

  6. Assessing the Value of Your GUI • Ask yourself two basic questions when designing your GUI. • Do the users always know where they are? • Do they always know where to go next? • Constantly answering these two questions will help you keep in perspective the goal of your GUI.

  7. Callback Editor • The “meat” of the GUI process • Opening function is first callback in every “guide” generated GUI • Usually used to generate data used in GUI • Callbacks define what will happen when a figure component is selected • Must write CODE!!!!

  8. GUI EXAMPLE • Utilize functions • Surf, Mesh, Contour • Types of plots performed on data in example • Peaks • peaks is a function of two variables, obtained by translating and scaling Gaussian distributions • Membrane • Sinc • sinc computes the sinc function of an input vector or array, where the sinc function is

  9. Summary • At command prompt type “guide” • After laying out your GUI in the layour editor • Define data in Opening Function • Edit/Align your components using • Tools Menu • Align • View menu • Property Inspector • Write the Callbacks • This is the most difficult aspect when creating GUI’s

  10. Where to Get More Information • http://www.mathworks.com/products/matlab/ • www.google.com • http://www.mathworks.com/access/helpdesk/help/techdoc/ref/peaks.html • http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=5439&objectType=file • http://www.mathworks.com/access/helpdesk/help/techdoc/creating_guis/creating_guis.html?BB=1 • Daniel Keller – thanks for taking time to help!