Undefined function or method 'int' for input arguments of type 'double'.

Question

Abdulaziz 2011-12-11

0
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https://ww2.mathworks.cn/matlabcentral/answers/23673-undefined-function-or-method-int-for-input-arguments-of-type-double

Hi Everybody, I need your help please. When I run my following script:

x=-3:.1:3;
Go=1000;
Bc=5;
Pin=3*exp(-x.^2);
Ein(i)=int(Pin,x,-inf,inf);
for i=1:length(x);
      z=x(i);
      Eo(i)=int(Pin,x,-inf,z);
      E(i)=Eo (i)/Ein(i);
      G(i)=Go/(Go-(Go-1)*exp(-E(i)*0.1));
      Pin=3*exp(-x(i)^2);
      Pout(i)=Pin*G(i);
      Phi(i)=-0.5*Bc*log(G(i))*pi/180;
      Aout(i)=sqrt(Pout(i))*exp(i*Phi(i));
end
Aoutf=fftshift(fft(Aout,100000));
f=(-100000/2:(100000/2-1)).*1/(0.01*100000);
Poutf(i)=abs (Aoutf).^2;
plot(f,abs(Poutf),'-r*')