"Undefined function or variable" in GUIDE

I have a script who replace some values. The problem is that when i click the action button for firt time, it work, but second give me this error :

          Undefined function or variable 'redenumire'.

          Error in
          matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)redenumire('renamebtn_Callback',hObject,eventdata,guidata(hObject))

How can i solve this ? I'm totally at the start with Matlab, and i can't find a response for my question on internet.

Answer 1

[Walter Roberson]

You code might be cd'ing (changing directory) away from the directory that holds the .m file for your code.

[Gheorghe Madalina Eleonora]

i have only one cd... This is the function

function renamebtn_Callback(hObject, eventdata, handles)
dir=get(handles.directorytext,'String');
if ~strcmp(dir,'')
    PathName=handles.PathName;
    calea=handles.PathName;
    cd(calea)
    client=handles.client;
    new_name=get(handles.newname,'String');
    old_name=get(handles.oldname,'String');

warndlg('Operation complete!')
else
    warndlg('Choose directory')
end

[Walter Roberson]

Right. You cd to calea but you do not cd back. After the first cd, your script redenumire.m is no longer in your current directory and MATLAB cannot find it to execute the code.

• avoiding cd is generally more robust
• if you do cd then do so only in the context of

   olddir = pwd;
   try
     cd(newdir)
     ...
   catch
   end
   cd(olddir)

Even that is risky as it cannot handle running out of memory or the user using control-C