You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: f2_sar2_panel.m
    path of file: ./repos/malini/Codes/FC_EC_calculation code/DynamicFC/jplv7/spatial/panel
    
    the code of the file until where you have to start completion: function llike = f2_sar2_panel(parm,index,y,y1,y2,x,W,N,T)
% written by: J.Paul Elhorst 2/2007
% University of Groningen
% Department of Economics
% 9700AV Groningen
% the Netherlands
% j.p.elhorst@rug.nl
%
% REFERENCES: 
% Elhorst J.P., Fréret S. (2009) Evidence of political yardstick competition in France 
% using a two-regime spatial Durbin model with fixed effects. 
% Journal of Regional Science. Forthcoming.

k = length(parm);
b = parm(1:k-3,1);

    
function llike = f2_sar2_panel(parm,index,y,y1,y2,x,W,N,T)
% written by: J.Paul Elhorst 2/2007
% University of Groningen
% Department of Economics
% 9700AV Groningen
% the Netherlands
% j.p.elhorst@rug.nl
%
% REFERENCES: 
% Elhorst J.P., Fréret S. (2009) Evidence of political yardstick competition in France 
% using a two-regime spatial Durbin model with fixed effects. 
% Journal of Regional Science. Forthcoming.

k = length(parm);
b = parm(1:k-3,1);
rho1 = parm(k-2,1);
rho2 = parm(k-1,1);
sige = parm(k,1);
detm=zeros(T,1);
for t=1:T
    W1=W;
    W2=W;
    for i=1:N
        if (index((t-1)*N+i,1)==0) W2(i,1:N)=zeros(1,N);
        else W1(i,1:N)=zeros(1,N);
        end