MATLAB: Slider component, unity steps

slider

I have a sldier component that I want to increment in unity steps. The minimum needs to be 1 and the max is a variable but will be between 10 and 30.

I can't understand the set properties of the slider component, it appears min and max work but min must be 0, it can't be 1. But then the step size seems to be in fractions??

Best Answer

min and max can both be anything numeric provided min is less than max. I would advise setting both in the same statement (and 'value' too) otherwise you can run into problems if you set the min first and it is above or equal to the current max or value property of the slider.

step size is in normalised units based on the range max - min of your slider.

figure; uicontrol( 'Style', 'slider', 'Min', 1, 'Max', 10, 'Value', 1 );

works, for example. Setting slider step is a little more complicated though. I wrote a custom class that handles that so it is a while since I have had to do it manually to get nicely rounded increments.

Related Solutions

MATLAB: Does the slider disappear when I change the Min and Max properties

There are two reasons why the slider can disappear when you change the Min and Max properties.

1) The Value property of the slider is no longer between the Min property and the Max property. If this is the case, change the Min, Max, and Value properties so that the Min property is less than or equal to the Value property, which is less than or equal to the Max property:

u = uicontrol('Style', 'slider');
set(u, 'Min', 1, 'Max', 10, 'Value', 1);

2) The Max property of the slider is less than or equal to the Min property of the slider. To correct this, change the Min property and/or the Max property of the slider so that the Min property is strictly less than the Max property.

MATLAB: I need help for this, setting slider steps!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

In code (your m-file) you can get the min and max and make the step one over the range:

maxSliderValue = get(handles.slider1, 'Max');
minSliderValue = get(handles.slider1, 'Min');
theRange = maxSliderValue - minSliderValue;
steps = [1/theRange, 10/theRange];
set(handles.slider1, 'SliderStep', steps);

Put this in your GUI's OpeningFcn function or whenever you change the slider's max value (which you probably don't do in your program.)

If you do it in the Property Inspector and have 1 as the min and 80 as the max, you should set the small step to 1/79 = 0.012658227848101, and the large step as some multiple of that, like 2 or 3 times as large.

Best Answer

Related Solutions

MATLAB: Does the slider disappear when I change the Min and Max properties

MATLAB: I need help for this, setting slider steps!!!!!​!!!!!!!!!!​!!!!!!!!!!​!!!!

Related Question

MATLAB: I need help for this, setting slider steps!!!!!!!!!!!!!!!!!!!!!!!!!!!!!