Slider GUI for fitting

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Rafael Ferdinandus
Rafael Ferdinandus 2021-4-23
编辑： Rafael Ferdinandus 2021-4-23
I want to use slider to determine the lower limit when i try to fit a data, but nothing works. the fitting is appeared but nothing change when i drag the slider. no error message either. i use 'exclude by rule' fitting tool to imply the slider, how do i fix it?
here is the code im working on for callback slider. i was testing the slider feature for popvalue 2 first.
% --- Executes on slider movement.
function slider1_Callback(hObject, eventdata, handles)
% hObject handle to slider1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
sliderval = get(hObject, 'Value')
assignin('base', 'sliderVal', sliderval)
popvalue = get(hObject, 'value')
file=handles.file
data = xlsread(file)
t1 = data(:,1)
t2 = data(:,2)
if (popvalue == 2)
[xdata, ydata] = prepareCurveData(t1,t2)
excludedPoints = xdata < t1.sliderval
ft = fittype( 'Ms*(1-A/x-B/x^2)+(D*x)', 'independent', 'x', 'dependent', 'y' );
opts = fitoptions( 'Method', 'NonlinearLeastSquares' );
opts.Display = 'Off';
opts.Exclude = excludedPoints
[fitresult, gof] = fit( xdata, ydata, ft, opts);
plot( fitresult, xdata, ydata, excludedPoints );
grid on
xlabel('H')
ylabel('M')
Ms = fitresult.Ms
a = fitresult.A
b = fitresult.B
k = fitresult.D
set (handles.edit2,'String',num2str(a))
set (handles.edit3,'String',num2str(b))
set (handles.edit4,'String',num2str(k))
set (handles.edit5,'String',num2str(Ms))
elseif (popvalue == 3)
[xdata, ydata] = prepareCurveData(t1, t2);
ft = fittype( 'Ms*(1-A/x-B/x^2)', 'independent', 'x', 'dependent', 'y' );
opts = fitoptions( 'Method', 'NonlinearLeastSquares' );
opts.Display = 'Off';
[fitresult2, gof2] = fit( xdata, ydata, ft, opts );
plot( fitresult2, xdata, ydata );
grid on
xlabel('H')
ylabel('M')
Ms = fitresult2.Ms
a = fitresult2.A
b = fitresult2.B
k = 0
set (handles.edit2,'String',num2str(a))
set (handles.edit3,'String',num2str(b))
set (handles.edit4,'String',num2str(k))
set (handles.edit5,'String',num2str(Ms))
elseif (popvalue == 4)
[xdata, ydata] = prepareCurveData(t1, t2);
ft = fittype( 'Ms*(1-B/x^2)', 'independent', 'x', 'dependent', 'y' );
opts = fitoptions( 'Method', 'NonlinearLeastSquares' );
opts.Display = 'Off';
[fitresult3, gof3] = fit( xdata, ydata, ft, opts );
plot( fitresult3, xdata, ydata );
grid on
xlabel('H')
ylabel('M')
Ms = fitresult3.Ms
a = 0
b = fitresult3.B
k = 0
set (handles.edit2,'String',num2str(a))
set (handles.edit3,'String',num2str(b))
set (handles.edit4,'String',num2str(k))
set (handles.edit5,'String',num2str(Ms))
end

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