How do I get an m-file to read from a GUI interface specified directory?

I am trying to get an m-file to work from within a GUI interface. My m-file reads jpgs from within a specified path directory and then averages them together. How do i change the m-file so that it reads the jpgs from a path directory specified by the GUI user?

I am very new to this GUI and MATLAB programming so please try and make the answer as simple as possible.

Many thanks

[Paulo Silva]

repeated question by same user http://www.mathworks.com/matlabcentral/answers/10847-how-do-i-write-into-my-m-file-to-use-the-gui-user-selected-pathdirectory

Answer 1

[Jan]

This depends on where the specified path is stored. If you write it to the GUIDATA and call the M-file from a callback of one of the GUI's elements, you could get it using GUIDATA again and use it as input argument of the N-file. But there are dozens of other possibilities. So please post more details.

[Sue]

Can I send you the m-file and fig so I can explain it a bit better?