MATLAB Programming Fundamentals - MathWorks

end

id =

MATLAB:narginchk:notEnoughInputs

Text of the Error Message

An error message in MATLAB is a read-only character vector issued by the program code

and returned in the MException object. This message can assist the user in determining

the cause, and possibly the remedy, of the failure.

When throwing an exception, compose an appropriate error message and save it to the

MException object at the time you construct the object using the syntax

ME = MException(identifier, text)

If your message requires formatting specifications, like those available with the sprintf

function, use this syntax for the MException constructor:

ME = MException(identifier, formatstring, arg1, arg2, ...)

For example,

S = 'Accounts'; f1 = 'ClientName';

ME = MException('AcctError:Incomplete', ...

'Field ''%s.%s'' is not defined.', S, f1);

ME.message

ans =

Field 'Accounts.ClientName' is not defined.

When responding to an exception, you can extract the error message from the

MException object as follows:

try

surf

catch ME

msg = ME.message

end

msg =

Not enough input arguments.

26 Error Handling