How to use the mouse scroll as a counter in MATLAB?

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Rudy
Rudy 2015-6-12
评论： Walter Roberson 2015-6-16
Hi there,
I want to use the scroll wheel in a figure. What I for instance want: Take the function f(x) = x^a, where 'x' is something like 1:10 and 'a' a constant. I want to plot f(x), and when I scroll up I want 'a' to increase by one, and when I scroll down I want 'a' to decrease by one and display it right away. Is this possible?
Thank you for your help in advance.
Kind regards, Rudy

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回答（1 个）

Walter Roberson
Walter Roberson 2015-6-12
  2 个评论
Walter Roberson
Walter Roberson 2015-6-16
Set a WindowScrollWheelFcn callback on the figure; see http://www.mathworks.com/help/matlab/ref/figure-properties.html for more information on the Event structure that is passed to it.
Your callback would calculate a new value for "a" and then would call a function to do the plotting for you.

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