Is it possible to declare and function within another function? if not, Look at the code below

% --- Executes on button press in Browse1.

function Browse1_Callback(hObject, eventdata, handles)

ExPath1 = fullfile(FilePath, FileName)

set(handles.Filename1,'string',ExPath1)

%-----------------------------------------------------------------------------

(I am trying use the ExPath1 variable from my Browse function in my calculate function, IS IT POSSIBLE TO USE THE ExPath1 VARIABLE? because I need it in order to do the calculation.)

%-----------------------------------------------------------------------------

%Calculate button code

function Calculate1_Callback(~, ~, ~)

[x, error, stat1, stat2, stat3] = correctionModelworking1(ExPath1,'true',2,'true');

Answer 1

[Walter Roberson]

http://matlab.wikia.com/wiki/FAQ#How_can_I_share_data_between_callback_functions_in_my_GUI.3F

More specifically:

function Calculate1_Callback(~, ~, handles)
  ExPath1 = get(handles.Filename1, 'string');

    x, error, stat1, stat2, stat3] = correctionModelworking1(ExPath1,'true',2,'true');

Provided, that is, that your callback is being passed handles, as would be the case if you are using GUIDE.

[Cordelle]

(This is the error message that occured; what does it mean? and is there a way to fix it? thank you in advance, i really appreciate your help)

Undefined variable "handles" or class "handles.Filename1".

Error in GUI>Calculate1_Callback (line 360) ExPath1 = get(handles.Filename1, 'string');

Error in gui_mainfcn (line 96) feval(varargin{:});

Error in GUI (line 42) gui_mainfcn(gui_State, varargin{:});

Error in @(hObject,eventdata)GUI('Calculate1_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating uicontrol Callback

[Walter Roberson]

Please show your complete code for Calculate1_Callback

[Cordelle]

% --- Executes on button press in Calculate1.

function Calculate1_Callback(~, ~, ~)

% hObject handle to Calculate1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

%[x, error, stat1, stat2, stat3] = correctionModelworking1('landsat5.xls', 'true', 2,'true');

global shift fileName;

[~, ~, ~, ~, stat3] = correctionModelworking1(fileName, shift,'false',handles); %#ok<NASGU>

clear shift

[Walter Roberson]

As I indicated in my code, you need

function Calculate1_Callback(~, ~, handles)

If you use my code as written then you will not need the "global"

Answer 2

[Sean de Wolski]

You either have to pass it in as an input to the second function, or make the second function nested:

function foo(stuff)

a = pi;   
  function baz()
     a = a+1;
  end
end