[Scilab-users] How to use champ

[shahriqeen]

I am a new user to this scilab. How to plot the champ of this system

function f=System1(t, y);
 f = zeros (2,1);

 f(1) = A*y(1)-(B*y(1)*y(2));
 f(2) = (-C*y(2))+(D*y(1)*y(2))

endfunction

A=0.4; 
B=0.06; 
C=0.12; 
D=0.0006;
t0=0;          
y0=[140;6];     
t=0:0.001:150;  
    y=ode (y0,t0,t,System1);
    
    plot2d(y(1,:),y(2,:),1);
    xtitle ('System1');
    xlabel('x');
    ylabel ('y');  



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