How to create a black border in each figure of a subplot with colormaps?

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[Julio Beltrami]

Thank You, I will try.

Answer 1

[Akihumi]

Have you tried box?

Answer 2

[Image Analyst]

If you're displaying an image, try calling padarray() to put a layer of zeros all the way around your image.

Answer 3

[Julio Beltrami]

Thank You, I will try.