plot 3 horizontal lines
显示 更早的评论
I have a simple x,y plot of values. I want to plot 3 additional horizontal lines, one being the mean, one being 2 standard deviations above, and one being 2 standard deviations below. I figured out how to plot the mean but I can't figure out how to plot the standard deviations on the same plot.
采纳的回答
Vishnu
2023-7-12
I see that you want to create a plot with horizontal lines representing values above and below the mean by 2 standard deviations. Here is an example oh how we can achieve this:
A = [4 5 1];
t = [1 2 3];
plot(t,A)
hold on
avg = mean(A);
deviation = std(A);
yline(avg,"g")
yline(avg+2*deviation,"r")
yline(avg-2*deviation,"b")
hold off
Note the hold on and hold off is used to keep plotting onto the same plot. for further reading you can check out the following documentations:
1 个评论
John D'Errico
2023-7-12
编辑：John D'Errico
2023-7-12
I accepted this accurate answer, since the question was an old one and might not get seens by the OP.
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Annotations 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
