Add arrows to an image

Hi there all. I have a question here.

How could I add an arrows on an image? For example, I want to point to somewhere of the image, and put some text to describe it.

Thanks in advance of your help.

Answer 1

[Stephen23]

The easiest way is to use an annotation, which places text and an arrow on a plot. Here an example from the documentation:

figure
plot(1:10)
x = [0.3 0.5];
y = [0.6 0.5];
annotation('textarrow',x,y,'String','y = x ')

If you want to use arrows by themselves, you can download some of the FEX submissions that draw arrows:

https://www.mathworks.com/matlabcentral/fileexchange/278-arrow

https://www.mathworks.com/matlabcentral/fileexchange/55181-drawarrow

etc:

https://www.mathworks.com/matlabcentral/fileexchange/?term=arrow