lsqcurvefit Problem looping it

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Meddour Aissam riad 2020-2-19

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Hi,

i'm using 'lsqcurvefit ' to resolve an optimization problem (finding three coefficient c(1),c(2) and c(3))

i have the following objectiv function :

fitfcn = @(c,Var)Capa*(1+c(1).*sqrt(Var(:,1)).*(c(2).^((Var(:,2)-T0)./DELTAT).*c(3).*(Var(:,3)-V0)./DELTAV))

i must find the three coeffetion with what i'll calculate a vector this way

for Cycle=1:1:10
    
    %Decalre Model
    
    for j=1:1:length(Temps)
        fcn(Cycle) =Capa*(1+c(1).*sqrt(Var(j,1)).*(c(2).^((Var(j,2)-T0)./DELTAT).*c(3).*(Var(j,3)-V0)./DELTAV));
    end
    
    Capa=fcn(Cycle);
       
end

the thre coefficient must help be to reduce the error between the result of the last calculation and a vector of ten values (that's why we're calculating with Cycle=1:1:10

show should i realise that since i can't i don't know if i should put [xfitted,errorfitted] = lsqcurvefit(fitfcn,c0,Var,ydata,lb,ub) inside or outside the loop