fminsearch with boundary conditions on parameters

hello everyone,

I am using fminsearch to find three parameters for theoretical values of my data, but matlab occasionally gives me negative values as the best fit, which is experimentally impossible. I was wondering if it was possible to set conditions for the parameters. In the following,I want the three values in p to be strictly positive:

[p1, c1]=fminsearch(@(p)chi2S(p,testConc,testIL202, testEdraw), p0)

thanks for your help, Mark

Answer 1

[Sargondjani]

in the file exchange there is an fminsearch with boundaries (fminsearchbnd)

i assume you dont have the optimization toolbox, otherwise you could use fmincon