标签: 问题反馈——未实现的功能
https://mp.weixin.qq.com/s/TlY_8EIceIivbWVgRdhjAA
代码
R0 = 3;[S,I] = meshgrid(0:.005:1);dS = - R0.*S.*I;dI = R0.*S.*I - I;dS(S+I>1) = 0;dI(S+I>1) = 0;S = streamslice(S,I,dS,dI,5);axis([0,1, 0,1])