Bounding box around image

I'm attempting to show an image within a plot, with a bounding box around the image. However, the following results in an image without a bounding box, despite the box being explicitly asked for:

 clear

 close all

 % Create figure

 fig1 = figure;

 % Random plot

 plot( (1:10), randi(10,1,10) )

 % Create new axes within existing

 axes('pos',[.1 .6 .5 .3])

 % Load and show image

 imshow('coins.png')

 a1 = gca;

 % Try turning box on and redrawing

 a1.Box = 'on';

 drawnow;

Any suggestions as to how this might be resolved? I'm hoping there's a simpler way than having to manually draw a box over the top...

Answer 1

[Image Analyst]

Try this:

% Random plot
plot( (1:10), randi(10,1,10), 'LineWidth', 2)
grid on; % Optional
% Create new axes on top of the existing plot.
axes('Position',[.1 .6 .5 .3])
% Load and show image
imshow('coins.png')
axis('on', 'image');  % This is the KEY LINE OF CODE!

Also see this link to learn how to format your code. http://www.mathworks.com/matlabcentral/answers/13205#answer_18099

[Owen Gebler]

That's exactly what I was after, thanks!

Answer 2

[Matt J]

This might be a useful alternative,

https://www.mathworks.com/matlabcentral/fileexchange/21005-draw-a-border-around-an-image

[Owen Gebler]

That's potentially a useful addition if more flexibility over the properties of the border is required. Thanks!