Tracking mouse position on figure

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I'm looking for some way of turning a JPEG into a MATLAB figure (which I know how to do). And then be able click on the figure and have the x and y values of where I clicked go into the code as variables, so I can take them through some function. Then be able to update the image with a circle at the point where I clicked if the x and y values fulfil a certain criteria from the function.

Accepted Answer

Image Analyst
Image Analyst on 1 Jul 2013
% Get x,y coordinates
[x, y] = ginput(1);
% x = column, not row. So use yourImage(y,x), not yourImage(x,y)!
See the FAQ for code examples on creating circles. http://matlab.wikia.com/wiki/FAQ#How_do_I_create_a_circle.3F
  1 Comment
Jonathan  Cellere
Jonathan Cellere on 13 Mar 2020
This command helped me a lot, could you help me? I made a GUI application where I need to get the X, Y positions of a figure however I need to delimit that the cursor can only take the values ​​of the figure and not others such as a button that is next

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More Answers (1)

Pourya Alinezhad
Pourya Alinezhad on 1 Jul 2013
you can use the function
[x,y] = ginput(4)

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