MATLAB: How to graph the outline of a curve

beginnergraphoutline

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!

Best Answer

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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