MATLAB - Axis equal and meanwhile stretch-to-fill?

Question

By default, stretch-to-fill is on. So

pixels = ones(100,100)
image(pixels);
colormap([0 0 0; 1 1 1]);

produces

Forcing the axes to be of the same scale, this

pixels = ones(100,100)
image(pixels);
colormap([0 0 0; 1 1 1]);
axis equal;

produces

Obviously, stretch-to-fill is overridden by axis equal. What to do to make them co-exist?

Answer 1

I think you are looking for this call:

figure(1)
image(pixels)
colormap(clr)
axis image        % <-- this call

Here is a table of the axes properties manipulated by the various axis modes:

---

You can also do something similar using the imshow function, which acts as a higher-level wrapper to image/imagesc:

figure(2)
imshow(pixels, clr, 'InitialMag','fit', 'Border','loose')
axis on

Answer 2

The problem is, your axis limits reflect the old size. Maybe there is a generic way to solve it, but setting the limits manually solves it:

xlim([1,100]);ylim([1,100])