How to graph the outline of a curve

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dj
dj 2014-10-18
评论： Mohammad Abouali 2014-10-20
Hello.
I'm trying to plot (x,T) and want to just depict the upper limit curve. I tried to use other Matlab programs others have posted and the findpeaks equation, but I'm not getting much luck.
I want to plot this curve instead of filtering the data and distorting it in a way. Could anyone help me out please? Thank you for your time!

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Mohammad Abouali
Mohammad Abouali 2014-10-19
How does this work for you?
load Example
[pks,locs]=findpeaks(T,x,'MinPeakDistance',3);
plot(x,T);
hold on
plot(locs,pks,'r','LineWidth',3)
The redline is the upper bound.
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dj
dj 2014-10-20
Wow, typing x in front of (locs) makes THIS much difference? This is so weird. Yes, I do have R2013a version. Thank you, everyone. Sorry about the late feedback.
Mohammad Abouali
Mohammad Abouali 2014-10-20
I am guessing the x was not supported in the former version of MATLAB. Not sure but I think even R2014a didn't support it.

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