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GUI Examples using Nested Functions

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GUI Examples using Nested Functions

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28 Mar 2005 (Updated )

These two examples demonstrate how to use nested functions to reduce parameter passing in GUIs.

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Description

These two examples, which were originally posted in the MATLAB newsgroup comp.soft-sys.matlab, demonstrate how to use the nested function capability of MATLAB 7.0 (R14) and later versions to reduce the number of parameters that need to be passed into and between callbacks inside a GUI M-file. Each nested function in one of these examples is contained in its own cell; if you enable cell mode in the MATLAB Editor and place the cursor in a given nested function, you will be able to see where each nested function begins and ends. Each example is extensively commented and indicates when variables from a parent function's workspace are being used by a nested function.

To execute these examples, simply unzip the ZIP file and place the contents in a directory on your MATLAB path, then execute "red_blue" or "red_blue_two" without the quotes at the MATLAB prompt.

For more information on nested functions, please check the Programming section of the MATLAB documentation.

NOTE: These examples will only function using MATLAB 7.0 (R14) and later. Versions of MATLAB prior to 7.0 did not have the ability to nest functions and you will receive an error about an undefined function or variable 'red' if you try to use it in earlier versions.

Acknowledgements

This file inspired Simple Examples How Create Gui Applications.

MATLAB release MATLAB 7 (R14)
Other requirements These examples will only function using MATLAB 7.0 (R14) and later.
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Comments and Ratings (16)
31 Oct 2009 Ashwini

Good One .!

04 Feb 2009 Cedric Gommes

Fine example, Steven.

How can I pass a value to an argument out of the function red_blue?

For instance, I would like to be able to call the function as COLOR=red_blue() in another code, and get for COLOR whatever color I choose by clicking.

28 May 2007 FARID FARIDI  
05 Mar 2007 sayed saad  
05 Sep 2006 FG FG  
26 Aug 2006 Jake Bromage

Ahh... another reason why I need to understand nested functions! I was slowly getting used to GUIDE's handles structure but was finding it to be very unsatisfying. This is much more elegant.

Steven: Thank you for taking the time. Nice job.

10 Jul 2006 kazim abbas

nice

23 Apr 2006 Quintin Coetzee  
29 Sep 2005 heson chang  
02 Aug 2005 Schreier Manfred  
02 Aug 2005 Sinoy Xavier

Some error in both programms

02 Aug 2005 Sanith Varkey - CTS

error in the programm

31 Jul 2005 Mark Wolschon

Easy to follow.

25 May 2005 rohit singh  
30 Mar 2005 navid barati  
30 Mar 2005 Brett Shoelson

Very nice illustration of nested functions.

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