In the other post I told you to use getframe() and gave you code. Here is the demo again.
close all;
im=imread('cameraman.tif');
subplot(1,2,1);
imshow(im);
subplot(1,2,2);
imshow(im);
size(im)
zoom(8);
zoomedImage = getframe(); % Get zoomed portion that is visible.
size(zoomedImage.cdata)
figure; % Bring up separate figure.
imshow(zoomedImage.cdata);
Do you see how in the second figure it is only the zoomed, visible portion of the image from figure 1 that was captured and is being displayed?
Your post is ambiguous. On the one hand you say you want to capture only the zoomed portion, yet on the other hand you say you want "the entire image loaded on the axis" which would include the entire image even the parts that were zoomed out of the display window and not visible. Of course you already have the entire image - you sent it into the axes with imshow(), though what's displayed may be different if you added text, lines, or other annotation. Please clarify exactly what you want because it's not clear to me.
