How to Change the Min property of slider?

Question

Rightia Rollmann 2017-2-21

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/326148-how-to-change-the-min-property-of-slider

评论： Adam 2017-2-21

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 );

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Jan 2017-2-21

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Answer 1

Jan 2017-2-21

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/326148-how-to-change-the-min-property-of-slider#answer_255704

编辑：Jan 2017-2-21

在 MATLAB Online 中打开

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);