How to smoothen the following plot in matlab?

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marya
marya 2017 年 5 月 18 日
回答済み: 10B 2017 年 5 月 26 日
I used the following code to plot the figure below
function dydt = model (t,y)
dydt = zeros (size(y));
Ah=0.000051;Av=0.071;b1=0.071;b2=0.091;g=0.0035;
d1=0.0000043;d2=0.04;e1=0.001;w=0.11;
Sh=y(1);
Ih=y(2);
Rh=y(3);
Sv=y(4);
Iv=y(5);
Nh = Sh+Ih+Rh;
%The model
dydt(1) = Ah - b1*Iv*Sh/Nh +w*Rh - d1*Sh;
dydt(2) = b1*Iv*Sh/Nh - (g + e1 + d1)*Ih;
dydt(3) = g*Ih - (w +d1)*Rh;
dydt(4) = Av - b2*Ih*Sv/Nh - d2*Sv;
dydt(5) = b2*Ih*Sv/Nh - d2*Iv;
%The basic reproduction number for the model
R0 = sqrt((b1*b2*Av*d2)/(Ah*(d2^2)*(g + e1+ d1)));
disp(R0)
end
% plot
tspan = [0 10000];
y0 = [3600 1000 100 9600 400];
[t,y] = ode45(@model,tspan,y0);
plot(t,y(:,1),'b',t,y(:,2),'r',t,y(:,3),'g','Linewidth',3)
title('Plot of human population against time')
xlabel('Time(years)')
ylabel('Number of People')
legend('Susceptible ','Infectious','Recoverd' ,2)
As you can see the curves are not smooth enough. How can I smooth the curves further?
  3 件のコメント
Guillaume
Guillaume 2017 年 5 月 18 日
@KSSV, marya original formatting was very confusing as she'd conflated the ode function with the script that uses it. All the information was there. I've edited her post.
@Maria, I agree with Tina, the plots look very smooth, so you'll have to explain better what improvements you want.

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10B
10B 2017 年 5 月 26 日
Hello,
I think the pixellation is just because of the resolution of the image, but if you want to smooth your data - use smooth!
HTH
10B.

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