How can I fit a curve at the bottom of the plot below?
1 Ansicht (letzte 30 Tage)
Ältere Kommentare anzeigen
Stephen Tete
am 4 Jul. 2023
Bearbeitet: Stephen Tete
am 4 Jul. 2023
I have the attached dataset and I want to fit a curve at the bottom of the curve. See the attached photo. The original data is in blue and the fit is that in black.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1425948/image.png)
Sample data is attached. Thank you in advance
0 Kommentare
Akzeptierte Antwort
Matt J
am 4 Jul. 2023
Bearbeitet: Matt J
am 4 Jul. 2023
5 Kommentare
Matt J
am 4 Jul. 2023
Ok, but what help do you still require? As you can see below, the recommendations from my last comment work for y.txt as well.
[~,y]=readvars('y.txt');
x=(1:numel(y))';
S=[1,0.7,0];
for s=S
k=boundary(x([1:end,1]), y([1:end,1]),s);
k=k(diff(k)>0);
plot(x(k),y(k),'-.');hold on
end;
legend("s="+S); xlim([100,400])
Weitere Antworten (0)
Siehe auch
Kategorien
Mehr zu Linear and Nonlinear Regression finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!