Thread Subject: Why so much gray surround in a figure showing an image?

When I create a figure and use imshow() to show an image,
why is there so much wasted space surrounding the image?
Why can't it fit the image to the figure? For example,
run the following code:

% Image Processing Toolkit required for this code.
close all;
windowWidth = 20;
hsize = [windowWidth windowWidth];
sigma = 10;
kernel = fspecial('gaussian', hsize, sigma);
grid = zeros(41, 11);
grid(11, 6) = 1;
grid(32, 6) = 1;
twoGaussians = imfilter(grid, kernel);
figure;
imshow(twoGaussians, []);

Now look at the figure. The image is a tiny little
rectangle in a huge sea of gray. Even if you grab the
corner and make the figure window bigger, it's still
surrounded by an enormous amount of wasted space. Any way
to prevent this and make it sensibly size the image into
the figure?
Thanks,
Mark

"Mark " <hayworth@none.com> wrote in message <g0cqj3$8f9
$1@fred.mathworks.com>...
> When I create a figure and use imshow() to show an image,
> why is there so much wasted space surrounding the image?
> Why can't it fit the image to the figure? For example,
> run the following code:
>
> % Image Processing Toolkit required for this code.
> close all;
> windowWidth = 20;
> hsize = [windowWidth windowWidth];
> sigma = 10;
> kernel = fspecial('gaussian', hsize, sigma);
> grid = zeros(41, 11);
> grid(11, 6) = 1;
> grid(32, 6) = 1;
> twoGaussians = imfilter(grid, kernel);
> figure;
> imshow(twoGaussians, []);
>
> Now look at the figure. The image is a tiny little
> rectangle in a huge sea of gray. Even if you grab the
> corner and make the figure window bigger, it's still
> surrounded by an enormous amount of wasted space. Any
way
> to prevent this and make it sensibly size the image into
> the figure?
> Thanks,
> Mark

I don't have the image processing toolbox, so I can't run
your code, but if you are talking about the area outside
the axes, try this command:

set(gca,'position',[0 0 1 1])

Once you have done that, look into the documentation for
AXES and specifically the "Position" and "Units" properties.