Doug’s MATLAB Video Tutorials

October 30th, 2007

MATLAB Basics: GUI input validation

 Two minute video shows how to validate GUI input. This makes sure that user input will not break your code. This example makes sure that the edit box value is not greater than twelve. This technique can be used for many different tests.
Find the files here. Other videos have been gathered here: http://blogs.mathworks.com/pick/category/video/ Other MATLAB Basics posts have been gathered here: http://blogs.mathworks.com/pick/category/matlab-basics/

By Doug Hull

11:28 UTC | Posted in Format: Video, Level: Basic, Topic: GUI or GUIDE | Permalink |

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4 Responses to “MATLAB Basics: GUI input validation”

  1. José Ramón Menzinger replied on October 31st, 2007 at 06:20 UTC :

    It is a fine Exampla but the code line:
    set(hObject, ‘String’, ‘12′);
    is IMO not realy adecuate.

    These kind of declarations will produce “other errors” soon or later… I find better something like:

    set(hObject, ‘String’, num2str(modeNum) );

    so wenn you mustchange the treshold value you shuoldf change only one value, isn’t it?

    Best regards!

    J.R.!

  2. Doug replied on November 2nd, 2007 at 07:40 UTC :

    José,

    I totally agree with your idea here. In my video series “Cleaner Code in MATLAB”

    http://blogs.mathworks.com/pick/2006/12/13/cleaner-code-in-matlab-part-1-of-series/
    http://blogs.mathworks.com/pick/2007/01/12/cleaner-code-in-matlab-part-two/

    I talk about how you should avoid the use of Magic Numbers. Sometimes I do things for brevity in the videos that I could do better with more time.

    Thanks!
    Doug

  3. Ken Rotter replied on November 8th, 2007 at 04:33 UTC :

    Video cutting off after 1:30 seconds today- tried three times.

  4. Doug replied on November 8th, 2007 at 09:37 UTC :

    Ken,

    Thank you, the file was corrupted. I have verified the fix is working now.

    Thanks,
    Doug

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