This example shows how to build an app using modular tools that displays an image with navigation aids including scroll bars, and overview window, and a magnification box.
First, define a function that builds the app. This example defines a function called
my_large_image_display at the end of the example.
After you define the function that builds the app, test the app. Read an image into the workspace.
I = imread('car1.jpg');
Display the image with navigation aids in the app.
my_large_image_display function accepts an image as an argument and displays the image in a figure window with scroll bars, an Overview tool, and a magnification box. Note that the function suppresses the toolbar and menu bar in the figure window because scrollable navigation is incompatible with standard MATLAB™ figure window navigation tools.
function my_large_image_display(im) % Create a figure without toolbar and menubar hfig = figure('Toolbar','none', ... 'Menubar','none', ... 'Name','My Large Image Display Tool', ... 'NumberTitle','off', ... 'IntegerHandle','off'); % Display the image in a figure with imshow himage = imshow(im); % Add the scroll panel hpanel = imscrollpanel(hfig,himage); % Position the scroll panel to accommodate the other tools set(hpanel,'Units','normalized','Position',[0 .1 1 .9]); % Add the magnification box hMagBox = immagbox(hfig,himage); % Position the magnification box pos = get(hMagBox,'Position'); set(hMagBox,'Position',[0 0 pos(3) pos(4)]); % Add the Overview tool hovervw = imoverview(himage); end