How to solve the following errors?

Undefined function or variable 'extplottingIter'.

Error in FindConfinedRegionsIter (line 223)

extplottingIter

Error in APM_GUI>pushbutton8_Callback (line 482)

FindConfinedRegionsIter

Error in gui_mainfcn (line 95)

feval(varargin{:});

Error in APM_GUI (line 46)

gui_mainfcn(gui_State, varargin{:});

Error in

matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)APM_GUI('pushbutton8_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating UIControl Callback

Answer 1

[Walter Roberson]

You refer to extplottingIter . We do not have enough information to know whether that is a function name or the name of a variable. If it is intended to be a function, then it is not findable from pushbutton8_Callback, such as if is defined in a private function you do not have access t, or if it is a method of an object and you did not pass the object to it, or if it is a nested function inside a different function (and so is hidden from you), or if it is a function in a different .m that is not the first function in that .m and so is hidden from you.

If it is intended to be a variable, then it is not defined in the workspace of pusbutton8_Callback.

The most likely scenario is that it is a variable that you defined in a different callback, and which disappeared as soon as that other callback returned because it was a local variable there. See http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.28s.29.3F