MATLAB: Normalized Units for Programmatically added sliders

gui

Hi there. Sorry is this has been asked before.

I have a loop and within each loop, I want to add a slider to a panel. I want these sliders to resize with the figure and I can't find what property/properties I should use. Any help appreciated.

Here is my code.

for k = 1:length(handles.f.muscles)
    sl = uicontrol(handles.pnl_sliderPanel,...
        'Style', 'slider',...
        'Max', 1,...
        'Min', 0,...
        'SliderStep', [0.05 0.2],...
        'Position', [10 (700-k*position) 150, 30],...
        'Units', 'normalized');
end

Best Answer

Actually setting the 'Units' after the 'Position' should work. But try this:

for k = 1:length(handles.f.muscles)
  sl(k) = uicontrol(handles.pnl_sliderPanel,...
      'Style', 'slider',...
      'Max', 1,...
      'Min', 0,...
      'SliderStep', [0.05 0.2],...
      'Position', [10 (700-k*position) 150, 30]);
  end
  set(sl, 'Units', 'normalized');

Related Solutions

MATLAB: How to Change the Min property of slider

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);

MATLAB: Increasing slider value of a GUI

See https://www.mathworks.com/help/matlab/ref/uicontrol-properties.html#property_SliderStep

figure;
uicontrol('Style', 'Slider', 'Position', [10, 10, 200,20], ...
          'SliderStep', [1/29, 0.1], ...
          'Min', 10, 'Max', 300, 'Value', 10, ...
          'Callback', 'disp(get(gcbo, ''Value''))')

The range goes from 10 to 300, which is a distance of 290. To get a stepsize of 10, the SliderStep must be 10/290, or 1/29. You should expect rounding errors, so fix the value in the callback:

uicontrol('Style', 'Slider', 'Position', [10, 10, 200,20], ...
          'SliderStep', [1/29, 0.1], ...
          'Min', 10, 'Max', 300, 'Value', 10, ...
          'Callback', mySliderCB);
function mySliderCB(SliderH, EventData)
Value = round(get(SliderH, 'Value'));
set(SliderH, 'Value', Value);
...

Best Answer

Related Solutions

MATLAB: How to Change the Min property of slider

MATLAB: Increasing slider value of a GUI

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