Specifications

Programming Callbacks for GUI Components
4-15
Note If your GUI is opened as the result of another GUI’s callback, you might
need to explicitly specify the target axes. See “GUIs with Multiple Axes” on
page 4-16.
Example: Displaying an Image on an Axes
This example shows how to display an image on an axes. The example
• Displays an image file on an axes.
• Resizes the axes to fit the image.
• Resizes the GUI so that its width and height are 100 pixels larger than the
image file.
To build the example:
1 Open a blank template in the Layout Editor.
2 Drag an axes into the layout area.
3 Select M-file editor from the View menu.
4 Add the following code to the opening function:
set(hObject, 'Units', 'pixels');
handles.banner = imread([matlabroot filesep 'demos' filesep
'banner.jpg']); % Read the image file banner.jpg
info = imfinfo([matlabroot filesep 'demos' filesep
'banner.jpg']); % Determine the size of the image file
position = get(hObject, 'Position');
set(hObject, 'Position', [position(1:2) info.Width + 100
info.Height + 100]);
axes(handles.axes1);
image(handles.banner)
set(handles.axes1, ...
'Visible', 'off', ...
'Units', 'pixels', ...
'Position', [50 50 info.Width info.Height]);
When you run the GUI, it appears as in the following figure.