How do I change the image in my GUI by targeting an axis when using IMSCROLLPANEL function in Image Processing Toolbox 5.3 (R2006b)?

I have a GUI in which I want to display an image using IMSCROLLPANEL. But IMSCROLLPANEL displays the image on the figure itself and does not let me specify the axis on which I want the image to be displayed.

Also, I want to be able to display subsequent scrollable images on this axis.

Answer 1

[MathWorks Support Team]

The IMSCROLLPANEL needs a UIPANEL to add horizontal and vertical scroll bars to enable navigation around the image.

Therefore, to target an axis when using the IMSCROLLPANEL function a uipanel needs to be created as a parent of the axis.

The code below shows an example of performing this operation:

hf=figure; %handle to the figure

% Create a UIPANEL (imscrollpanel needs a figure or uipanel handle to

% operate)

ppp = uipanel('Units','Pixels');

% Set the uipanel position to where the image is desired to be displayed.

set(ppp,'position',[20 20 400 400]);

% Axes have to be a child on the uipanel for imscrollpanel to operate

% normally.

ax1 = axes('parent',ppp,'position',[0 0 1 1],'Units','normalized');

%Create the two images

im1=imread('saturn.png');

im2 = im1(:,:,1);

% display first image and obtain the handle

him1 = image(im1,'parent',ax1);

% Create the scroll panel

hSP = imscrollpanel(ppp,him1);    

% wait for user

input('enter')

% Clear the axes (which are now a child of the scrollpanel)

cla(ax1);

%wait for user

input('enter')

%display second image

him2=image(im2,'parent',ax1);