Matlab Mexception Undefined function

Hi, I'm currently attempting to add exception handling to a Matlab function (i.e. a fn defined in a *.m file) but I keep getting syntax errors; for example the following lines:

err = MException('I done a bad thing George'); throw(err);

results in the following:

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

Error in ==> xtry at 32 err = MException('I done a bad thing George');

I'm using Matlab 7.3.0

Marcus

[Geoff Hayes]

Typically, an error message like this, Undefined function or method…, means that the function that you are trying to invoke does not exist.

In the Command Window type which MException to display the full pathname to MException. When I do this, I see the following

 MException is a built-in method  % MException constructor

If you see MException not found, then your version of MATLAB does not support this functionality.

Answer 1

[Image Analyst]

Maybe try it like this:

try
  % Some code that might generate an error.
catch ME
  errorMessage = sprintf('Error in function %s() at line %d.\n\nError Message:\n%s', ...
    ME.stack(1).name, ME.stack(1).line, ME.message);
  fprintf(1, '%s\n', errorMessage);
  uiwait(warndlg(errorMessage));
end