how can i include a few lines of code in this program in order to show packet drop or delay or througput, thanks

Help me in showing packet drop/delay/throughput in this below matlab program.

clear All

Close All

clc

rand('state',0);

xx=rand(1,5)*5;

yy=rand(1,5)*5;

R=3;

nodearray=[xx;yy]';

for i=1:5

    hold on

   % x=nodearray(n,1);

    %y=nodearray(n,2);

    plot(xx,yy,'*');

    text(xx(i),yy(i),num2str(i));

    hold on

    title('Speed');

     for j=1:5

         d=sqrt((xx(i)-xx(j))^2+(yy(i)-yy(j))^2);

    if d<=R

    line([xx(i) xx(j)],[yy(i) yy(j)])

     end 

     end    

    axis([0 6 0 6])

end