I'm trying to use fminsearch to fit a logistic model to my data. My problem is that I'm rreally confused about how to define the input for the fminsearch function.
My data:
x = [0.5 2.7 6 8.8 9.7 12.8 16 20 23];y = [0.8 1.1 3.4 7 9 13 13.4 13.2 18.8];
I want to fit the parameters of following function to my data:
Now I don't know how to define the right functions for the optimization.
What I've tried so far:
f = @(p,x)p(1)*(0.5-(1./(1+exp(p(2)*(x-p(3))))))+p(4)*x+p(5);f2 = @(p)f(p,x); p0 = [0.1 0.1 0.1 0.0001 0.1];p = fminsearch(f2,p0);
But this is not the right way.
Best Answer