在 MATLAB 中，如何在拖动滑块时执行回调？
我使用 GUIDE 创建了 MATLAB GUI。我有一个带有回调函数的滑块。我注意到这个回调应该在“滑块移动”时执行，实际上只有在滑块移动并释放鼠标后才会运行。
有没有办法让脚本在拖动滑块时运行，以实时更新绘图？我认为需要有一些东西来阻止脚本运行太多次。
I have created a MATLAB GUI using GUIDE. I have a slider with a callback function. I have noticed that this callback, which is supposed to execute 'on slider movement', in fact only runs once the slider has been moved and the mouse released.
Is there a way to get a script to run as the slider is being dragged, for live updating of a plot? There would I presume need to be something to stop the script being run too many times.
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即使鼠标移动时不会调用滑块的回调，滑块 uicontrol 的
'Value'属性正在正在更新。因此，您可以使用addlistener创建监听器 将在'Value'属性更改时执行给定的回调。下面是一个示例：当您移动滑块时，您应该看到
'hi'被打印到屏幕上（侦听器回调），当您释放鼠标时，您将看到'hello'code> 打印（uicontrol 回调）。Even though the callback of the slider isn't being called as the mouse is moved, the
'Value'property of the slider uicontrol is being updated. Therefore, you could create a listener usingaddlistenerthat will execute a given callback when the'Value'property changes. Here's an example:As you move the slider you should see
'hi'being printed to the screen (the listener callback), and when you release the mouse you will see'hello'printed (the uicontrol callback).仅供记录，此主题在此详细讨论：http://UndocumentedMatlab.com/blog /continuous-slider-callback/ - 那里提出了几种替代解决方案。 gnovice 使用
addlistener的解决方案相当于handle.listener 替代方案，因为addlistener基本上只是后者的包装器。Just for the record, this subject is discussed in detail here: http://UndocumentedMatlab.com/blog/continuous-slider-callback/ - several alternative solutions are presented there. gnovice's solution using
addlisteneris equivalent to thehandle.listener alternative, sinceaddlisteneris basically just a wrapper for the latter.如果您想执行传递给 uicontrol 的相同原始回调，您可以添加此通用侦听器来引导现有回调：
相关博客文章
If you want to execute the same original callback you passed to
uicontrolyou can add this generic listener which bootstraps the existing callback:Related blog post