MATLAB: How to Change the Min property of slider

minslider

The code below works perfectly until I change Min from 0 to 1. Why cannot I set it 1? What is the solution?
function test3()
hfig = figure();
slider = uicontrol('Parent', hfig,...
                'Style', 'Slider',...
                'Tag', 'slider1',...
                'Callback', @slider_callback,...
                'Min', 0,...
                'Max', 40,...
                'SliderStep', [1/40 10/40]);
function slider_callback(hObject, eventdata)
a = get(hObject, 'Value');
disp( a );

Best Answer

When you set the 'Min' value to 1, the current 'Value' is still at 0. Therefore you should see the warning:
Warning: slider control can not have a Value outside of Min/Max range
Control will not be rendered until all of its parameter values are valid
Considering this:
function test4()  
hfig = figure();
slider = uicontrol('Parent', hfig,...
                'Style', 'Slider',...
                'Tag', 'slider1',...
                'Callback', @slider_callback,...
                'Min', 1, 'Max', 40,...
                'Value', 1, ...               % <- Inside [Min, Max]
                'SliderStep', [1/40 10/40]);  % Perhaps [1/39, 10/39]
function slider_callback(hObject, eventdata)
a = get(hObject, 'Value');
disp(a);
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