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.

Video Content

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4 Responses to “MATLAB Basics: GUI input validation”

José Ramón Menzinger replied on October 31st, 2007 at 6:20 am :

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.!

Doug replied on November 2nd, 2007 at 7:40 am :

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

Ken Rotter replied on November 8th, 2007 at 4:33 am :

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

Doug replied on November 8th, 2007 at 9:37 am :

Ken,

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

Thanks,
Doug

About

Doug Hull is an Application Engineer at The MathWorks. A MATLAB user since 1994, he gets paid to live, eat, and breathe MATLAB! This blog is dedicated to promoting the File Exchange by highlighting files and original video content.

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October 30th, 2007