MATLAB滑块步骤行为 [英] MATLAB slider step behavior

问题描述

我在MATLAB 2012a中使用GUIDE创建了一个滑块小部件.我希望它控制一个显示图像的轴，其中滑块逐步移动这些图像.

I have a created a slider widget using GUIDE in MATLAB 2012a. I want it to control an axis that displays images inwhich the slider steps through a sequence of them.

我已经在m文件的一部分中为Min，Max和SliderStep设置了滑块的属性.

I have set the slider's properties for Min, Max, and SliderStep in one part of the m-file.

sliderMin = 1;
sliderMax = size(result); % this is variable
sliderStep = [1, 1]; % major and minor steps of 1

set(handles.slider, 'Min', sliderMin);
set(handles.slider, 'Max', sliderMax);
set(handles.slider, 'SliderStep', sliderStep);
set(handles.slider, 'Value', sliderMin); % set to beginning of sequence

在滑块回调中，我已经验证了Min，Max和SliderStep的设置正确.

In the slider callback, I have verified Min, Max, and SliderStep are set correctly.

sliderMin = get(hObject, 'Min') % correct
sliderMax = get(hObject, 'Max') % correct
sliderStep = get(hObject, 'SliderStep') % correct
currentSliderStep = get(hObject, 'Value') % correct, 1 at start

但是，当我单击滑块的箭头时，仅在开始和结束之间跳转.每次将正确的Min，Max，SliderStep和Value(尽管只有1或slideMax)都打印到命令窗口中.我无法以1的增量步进来查看序列内部的图像.

However, when I click on the slider's arrows, I jump only between the beginning and end. Each time the correct Min, Max, SliderStep, and Value (although only 1 or sliderMax) is printed to the command window. I am unable to step in increments of 1 to view the images in the interior of the sequence.

推荐答案

The actual slider step size is scaled by the range: ActualStep = SliderStep * (Max - Min) The following line should solve your problem: sliderStep = [1, 1] / (sliderMax - sliderMin). You should probably check that you don't divide by zero before this line. Do note that sliders won't render if Max is not greater than Min.

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