Draw an outline within an image

Hi,

I've got an image up in MATLAB, ~ 50 x 50 grid cells, and would like to draw a (black) outline around a small box of pixels within the image. I don't want to shade them or colour them in, just draw an outline around them.

Thanks.

Answer 1

[Walter Roberson]

rectangle() can be used for that. Or line(), or patch() .

Answer 2

[David Young]

You might find the techniques described in this blog entry helpful.