Why do I get an error after adding a method to a class in MATLAB 7.7 (R2008b)?

I created a class called MyClass, which is stored in a file as follows:

 ..\@MyClass\MyClass.m

Then I create a function called myfunction.m and store the file in the folder @MyClass. When I execute the following:

myObj = MyClass

myfunction(myObj)

I get the following error:

Undefined function or method 'myfunction' for input arguments of type 'MyClass'.

I need to restart MATLAB for the function call to work properly. I would like for MATLAB to be automatically able to detect the new functions.

Answer 1

[MathWorks Support Team]

The ability to automatically detect new functions or methods stored in separate files is not available in MATLAB 7.7 (R2008b).

To work around this issue, you have two options:

1. Declare the method signature within a methods block in the classdef block as specified in the 'Methods in Separate Files' section of the documentation found by executing the following at the MATLAB Command Prompt:

 web([docroot '/techdoc/matlab_oop/brdqinq.html#brdqipw-1'])

For example:

classdef MyClass

     methods (AttributeName = value,...)

        tdata = myfunction(obj,arg1,arg2)

...

     end % methods

...

end % classdef

2. After creating the function file, execute either of the following two commands to clear the class/function cache:

clear classes

clear functions