GUIDE Tutorial1

Introduction to Matlab & Data Analysis 2015

In this tutorial we will:• Build a practical application using GUIDE• Learn more about graphical user interface components• Practice building callback functions that display data and manipulate

the GUI• This will be a step-by-step design procedure

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1. Open a blank template in GUIDE2. Open the Preferences dialog and toggle the “Show names” option

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3. Add a push button4. Duplicate this button 2 times to create 3 buttons

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5. Add a panel to contain our buttons. Move the buttons on to the panel.6. Add an axis for the surface plot

Adjust the window size by moving this corner

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7. You can align and distribute components

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8. Open the Properties Inspector of each push button and change the String and the Tag

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9. Using the Properties Inspector, edit the options string for the pop-up menu10. At this point you can activate the GUI , this will generate an *.m file and a *.fig file

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11. We will now go to the opening function which is called when the GUI starts

* To share data between the GUI objects we use the handles structure which is passed between functions

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12. Here we will define three datasets and create and initial plot

* To share data between the GUI objects we use the handles structure which is passed between functions

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13. Now we will edit the callback functions of the pushbuttons to update the 2D plotting method

handles.current_data stores our current dataset

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14. And finally we need to update the callback of the pop-up menu to update the right dataset

Don’t forget to update the handles structure using the function guidata()

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15. Now your GUI should be fully functional. You can activate it from the editor, layout editor or the command line

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1. Create a new GUI layout called ‘slider’ . This GUI will slide to the right MRI slice

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2. In the opening function, load the MRI data and display the first slice

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3. In the slider callback function we shall calculate the requested frame number and display it

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4. Try to slide through the axial slices of the dataset

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5. Now let’s display the current slice number in the static text

set(handles.frame_num,'string',num2str(handles.current_frame));guidata(hObject, handles);