MATLAB error for input arguments of type char

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Robert
Robert 2013-4-22
评论： Mohammed Hammouda 2021-3-17
??? 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?

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回答（5 个）

Kyle Savidge
Kyle Savidge 2018-3-12
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.
Walter Roberson
Walter Roberson 2013-4-22
It occurs because you do not have a routine named LoadDataFile . MATLAB does not have a routine by that name.
Robert
Robert 2013-4-22
My Lab teacher wrote this program for us... what should I use instead of this?
  1 个评论
Walter Roberson
Walter Roberson 2013-4-22
Your lab teacher might have supplied a routine by that name. Or might be expecting you to write the routine.

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Robert
Robert 2013-4-22
instead of LoadDataFile that is
Robert
Robert 2013-4-22
I think I understand. This could be possibly be a separate m file right?
  1 个评论
Walter Roberson
Walter Roberson 2013-4-22
Yes.
Please do not use a new Answer for each thing you say. Click in the "Comment on this Answer" section to create a comment on an existing answer.

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