Passing a value from a slider (guide) to a related function

I've designed a Gui with Guide. Basically I want to use a slider to define the part of a recorded curve that will be used as a template for a fitting function. The gui is in one .m file and the funciton in another .m file The gui is working fine , the slider adopts correct values. When I want to use this value in the function file I get the message "Not enough input argument". The function start with an (handle) declaration I tried with t=get(handle.slider2,'value') , not wotking , I tried with a combination -setappdat and getappdata-, empty matrix, I tried with findobj(0,'Tag',slider2), empty matrix. I'm kind of stuck here. Any suggestions would be appreciated.

% --- Executes on slider movement.
function slider2_Callback(hObject, eventdata, handles)
% hObject    handle to slider2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
slidervalue2=get(hObject,'Value');
set(handles.text4,'String',num2str(slidervalue2))
%setappdata(hObject,'Valueslider2',slidervalue2);
% Hints: get(hObject,'Value') returns position of slider
%        get(hObject,'Min') and get(hObject,'Max') to determine range of slider

% --- Executes during object creation, after setting all properties.
function slider2_CreateFcn(hObject, eventdata, handles)
% hObject    handle to slider2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: slider controls usually have a light gray background.
if isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor',[.9 .9 .9]);

function fitsinglebeat (handles)
pressure=getappdata(0,'pressure')
T=numel(pressure)
tsyst0=0
%sl1=findobj(0,'Tag','slider2')
tsyst1=get(handles.slider2,'value')
%tsyst1=getappdata(0,'valueslider2')

Answer 1

[Adam]

You aren't calling your fitsinglebeat function anywhere, but don't pass handles to it. If you want a single value from your slider then just pass this to it, not a whole structure full of things you don't want.

function fitsinglebeat ( value ) pressure=getappdata(0,'pressure') T=numel(pressure) tsyst0=0 tsyst1=value;

and just call it from your slider callback as

fitsinglebeat ( hObject.Value )

or

fitsinglebeat ( get( hObject, 'Value' ) )  % Pre R2014b