从Matlab绘图中获取平均值? [英] Getting average value from matlab plot?
问题描述
当我有图形时,我有一个简单的图,其中包含许多数据点.有没有一种方法可以让我简单地单击所有这些点,并允许matlab给我它们的平均值?
I have a simple plot which feature a lot of data points, when i have have graph. Is there a way that i can simple click on all these point and allow matlab to give me a average value of them?
谢谢
推荐答案
如果您不想以编程方式进行操作,最简单的方法就是使用数据笔刷和统计信息.
The easiest way if you don't want to do it programmatically would be to use the data brush and statistics.
我用plot(rand(1,200))
生成了我的数据.绘制完毕后,转到工具">数据统计". Y均值就是您想要的.
I used plot(rand(1,200))
to generate my data. After it has plotted go to Tools > Data Statistics. Y-mean is what you are looking for.
替代文本http://www.thinkextensively.com/misc/stackoverflow/images/matlab2.png
要获取一组特定数据的平均值,请选择所需的数据,然后在菜单中转到工具">涂刷">创建新变量". . ..这将创建一个包含装箱数据的变量.要获取均值,请执行mean(ans)
.向量中的第二个值是Y均值.
替代文本http://www.thinkextensively.com/misc/stackoverflow/images/matlab1.png
To get the mean of a specific set of data, select the data you want, then in the menu go to Tools > Brushing > Create New Variable . . .. This creates a variable containing the boxed data. To get the mean do mean(ans)
. The second value in the vector is the Y-mean.
alt text http://www.thinkextensively.com/misc/stackoverflow/images/matlab1.png
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