How can I define two function in function handle for GAMULTIOBJ?

I have 3 decision variables and 2 objective functions.

This is my code:

lb=[0.01,0.0075,0.01];

ub=[0.2,0.07,0.07];

func=@(x) [efficiency,LCCfunc];

[x,fvar]=gamultiobj(func,3,[],[],[],[],lb,ub);

My question:

Efficiency and LCCfunc are my objective functions. For example LCCfuns is:

function y=LCCfunc(var)

delta_PCM=var(3);

L=1.5;

W=1;

rho_PCMs=880;

m_PCM=W*L*delta_PCM*rho_PCMs;

phi_np=var(1);

m_nano=phi_np*m_PCM/(1-phi_np);

U_C_nano=100;

U_C_PCM=1;

cost_nanoPCM=(U_C_nano*m_nano)+(U_C_PCM*m_PCM);

IC=cost_nanoPCM;

k=0.2;

INR=0.12;

IFR=0.03;

MC=zeros(1,24);

MC(2)=1300*(1+IFR);

MCDiscount=zeros(1,24);

RC=zeros(1,24);

RC(2)=cost_nanoPCM;

RCDiscount=zeros(1,24);

% CRF=;

% RC=

% MC=k*IC*CRF;

for i=2:25

MC(i+1)=MC(i)*(1+IFR);

MCDiscount(i)=MC(i)/((1+INR)^(i-1));

end

MCtotal=sum(MCDiscount);

for i=2:25

RC(i+1)=RC(i)*(1+IFR);

RCDiscount(i)=RC(i)/((1+INR)^(i-1));

end

RCtotal=sum(RCDiscount);

LCC=IC+MCtotal+RCtotal;

y=LCC;

end

How can I define these two objective function in one function handle for using in GAMULTIOBJ?

Answer 1

[Torsten]

Since the functions are that long, better keep them separated.

But use

func=@(x) [efficiency(x),LCCfunc(x)];

instead of

func=@(x) [efficiency,LCCfunc];

to avoid an error message.

If you want to combine them in one function, simply use

func = @combined

and supply both columns in

function y = combined(x)
  y(:,1) = ...;
  y(:,2) = ...;
end

with y having 2 columns.

[Hannah Mohebi]

Thanks a lot.