Restricting app slider values
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Is there a way to restrict the values a slider in an app can take? I want to define an array of increasing numbers and have that be all the values the slider is allowed to take as I move it and NOT take on any other values. So for example if the first two values in my array are 1.23 and 2.45, I want the slider two start at 1.23 and when I move it to the right, it should go to 2.45 and NOT 1.4 or anything like that.
Thanks in advance!
采纳的回答
Is the spacing between values uniform? If so, you can set the step property.
If not, I think you would have to have your callback function process the slider value and set it to the predetermined value that is closest.
% Assume this is the slider value
value = 2.1;
% Assume this is the list of values you want the slider to take
myVals = [1.23 2.45 3.76 4.01];
% find the closest value
[~,ind] = min(abs(myVals-value))
valAct = myVals(ind)
Once you have identified the predefind value to use, set the slider's value property to that value.
app.Slder.Value = valAct;
I wrote the code the way I did so that it will execute here. You will of course need to adapt it to work within your app.
3 个评论
Harpreet
2022-12-12
Harpreet
2022-12-13
Cris LaPierre
2022-12-14
Sorry for the confusion. Only sliders in live tasks have a step property. So a uislider has the same properties as the slider component in an app.
If you want to only display accepted values on the tick labels, I would probably just programmatically set the slider ticks in a startupFcn. Note that a slider does not snap to the ticks. The previous answer I shared could be used for that purpose.
% Code that executes after component creation
function startupFcn(app)
app.Slider.MajorTicks = 1.23:1.22:15;
end
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