Why do I receive an error when opening the Membership Function window in the Fuzzy Logic Toolbox?

I am using the Fuzzy-Logic Toolbox version 2.1.1 (R12.1). When I try to open the MFEDIT window by going to 'Edit --> Add MF's...' in the Membership Functions Editor window, I receive the following errors:

 ??? Undefined function or variable 'centerfig'.                            

 Error in ==> D:\MATLAB6p1\toolbox\fuzzy\fuzzy\mfdlg.m                      

 On line 53  ==>     centerfig(figNumber, oldFigNumber);                    

 Error in ==> D:\MATLAB6p1\toolbox\fuzzy\fuzzy\mfedit.m                     

 On line 1292  ==>     mfdlg(figNumber,fis,varType,varIndex);               

 ??? Error while evaluating uimenu Callback.

I also receive the above error when trying to open the GUI using the 'mfedit' command.

Answer 1

[MathWorks Support Team]

This has been fixed the Fuzzy Logic Toolbox 2.1.2 (R13).

To fix this problem in version 2.1.1, you will need to remove the following lines:

- line 53 in mfdlg.m:

centerfig(figNumber, oldFigNumber);

- line 59 in wsdlg.m:

centerfig(figHandle,figNumber);

- line 57 in cmfdlg.m:

centerfig(figNumber,MainFigHndl);

These three files can be found in the following directory:

 $MATLAB\toolbox\fuzzy\fuzzy\

where $MATLAB refers to your root MATLAB directory.

Removing these lines will in no way affect the functionality of the toolbox.