How to Place an image over existing plots?

Hello, I have some graphs in Matlab over which I want to insert a small image. I do not want to cover the graphs completely, and want to know how to specify the exact position for overlaying this image onto the existing plots. I have used imread to read the file, but cannot seem to figure out imshow to display the image properly where I would like it to be.

Answer 1

[Chad Greene]

Hi Ashley,

Run this:

figure
plot((1:10).^2)
axes('pos',[.1 .6 .5 .3])
imshow('coins.png')

The axes command sets up a new set of axes on top of the x^2 plot, with the position of those axes as follows:

[bottomleftcornerXposition bottomleftcornerYposition width height]

[Ashley]

Hello Chad, Thank you! It worked perfectly!

Ashley

[Munish Sikka]

Hello Chad,

Thanks for this solution. it worked in my case too.

Regards,

[JACQUES SPILLMANN]

How would I go about rotating that picture on the plot, let's say, by 10 degrees clockwise?

[Dardag]

I am inserting a particular image in my figure but the resolution of the inserted image gets distorted if I create a smaller box for that, why would that be?

This is what I am using but I don't see any resolution options.

[img, map, alphachannel] = imread(fileName,'png');
image(img, 'AlphaData', alphachannel);

Answer 2

[DGM]

This doesn't necessarily require creating another axes object. This can be done directly by setting xdata/ydata for image/imagesc/imshow.

See the example:

https://www.mathworks.com/matlabcentral/answers/305543-how-to-insert-image-in-matlab#answer_1175570