MATLAB error for input arguments of type char

??? Undefined function or method 'LoadDataFile' for input arguments of type 'char'.

this keeps appearing every time I am running the code:

FileName=[GroupNamePartOfFileName FlywheelPartOfFileName int2str(InertiaVariant) PressurePartOfFileName int2str(pCase)];
        DualYes=0;  % data file is in dual format including errors in adjacent columns
        [t,RPM]=LoadDataFile(SourceDirectory,FileName,FileExtension,DualYes);

any help as to why this is happening?

Answer 1

[Kyle Savidge]

As a reference, I was hitting this error when using App Designer, although I had a routine with the same name and argument defined. The issue was that I was missing the first parameter (the "app" object I am working with).

Hopefully this information can be useful to others encountering this error within App Designer.

[Mohammed Hammouda]

Thanks.. Really helped here! Thanks again.

Answer 2

[Walter Roberson]

It occurs because you do not have a routine named LoadDataFile . MATLAB does not have a routine by that name.

Answer 3

[Robert]

My Lab teacher wrote this program for us... what should I use instead of this?

[Walter Roberson]

Your lab teacher might have supplied a routine by that name. Or might be expecting you to write the routine.

Answer 4

[Robert]

instead of LoadDataFile that is

Answer 5

[Robert]

I think I understand. This could be possibly be a separate m file right?

[Walter Roberson]

Yes.

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