How to limit data from a fit?

30 views (last 30 days)
I have a custom fit that fits data that I've plotted. I now want to try to limit the range in which the fit occurs. I want it to limit where x is less than 150.
Here is my current code:
rho=Resistivityohmcm;
T=TemperatureK;
plot(T,rho,'-o')
x=T;
y=rho;
fnPolySq=@(p1,p2,x) p1*x.^2 + p2;
fit(x,y,fnPolySq)
plot(f,T,rho)
disp (f)

Accepted Answer

Walter Roberson
Walter Roberson on 24 Jul 2018
mask = x < 150;
f = fit(x(mask), y(mask), fnPolySq);
plot(f, T, rho)

More Answers (1)

Aquatris
Aquatris on 24 Jul 2018
Create new variables;
range = find(x<150);
xNew = x(range)
yNew = y(range)
Obtain your fit using xNew and yNew variables instead of x and y.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!