Passing extra arguments to `nlinfit` function

I am in interested in passing extra arguments to nlinfit function in Matlab

beta = nlinfit(X,Y,modelfun,beta0)

and let the modelfun is

function y = modelfun(beta, c, X)
y = beta(1)*x.^(beta2) + c;

My interest is to estimate beta and also to provide c externally. X and Y have their obvious meanings.

Can it be done?

Answer 1

[Star Strider]

Your function must have your parameter vector as the first argument, your independent variable as the second argument, and any added parameters after that.

Try this:

Beta = nlinfit(X,Y,@(beta,X)modelfun(beta, c, X),beta0)

See the documentation on Passing Extra Parameters (link).

[Pankaj]

thanks

[Star Strider]

As always, my pleasure.