Why there is a Invalid Expresssion error in my fit function?

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I wrote this simple code
n = [1433;2700;1000000];
s = [1170.98;780.65;390.33];
f= fit(n,s,'power1')
But the error said "invalid expression. check for missing or extra characters"
I'm not very used to Matlab and I absolutely have no idea why this error occurs.
Ofc, I installed Curve Fitting Toolbox

Respuesta aceptada

the cyclist
the cyclist el 19 de Mayo de 2023
Your code works:
n = [1433;2700;1000000];
s = [1170.98;780.65;390.33];
f= fit(n,s,'power1')
f =
General model Power1: f(x) = a*x^b Coefficients (with 95% confidence bounds): a = 3511 (-3.081e+04, 3.783e+04) b = -0.167 (-1.38, 1.046)
Did you perhaps try to spread that code across multple lines? You might need to use line continuation, if so.
  3 comentarios
the cyclist
the cyclist el 19 de Mayo de 2023
It's difficult to understand what is going on with your code, when it works perfectly fine here.
Do you get this problem from a freshly restarted MATLAB session? How are you calling these lines of code?
Are you sure you have the CF toolbox installed? What do you get if you type
which -all fit
from the command line?
Hyeon Soo Lee
Hyeon Soo Lee el 19 de Mayo de 2023
Problem solved. Seems like my labtop was gone crazy for a while. It works fine now. Thanks for the help btw.

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