How can I draw the graph of the following two isoclines in Matlab?

Question

Parvaiz Ahmad Naik 2019-5-5

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回答： Zenin Easa Panthakkalakath 2019-5-14

采纳的回答： Zenin Easa Panthakkalakath

f(x,y)=A-Bx-Lx/(1+Mx)(1+Ny) (1)

g(x,y)=Lx/(1+Mx)(1+Ny)-D-F/(1+Hy) (2)

A=2; B=0.05; L=0.004; M=0.004; N= 0.002; D=0.053; F=0.02; H=0.0004

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Answer 1

Zenin Easa Panthakkalakath 2019-5-14

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Hi Parvaiz,

A combination of 'meshgrid' and 'surf' functions may be used in order to do this. The following code snippet may or may not be accurate, but feel free to use it as a starting point.

A=2; B=0.05; L=0.004; M=0.004; N= 0.002; D=0.053; F=0.02; H=0.0004
f = @(x,y)A-B.*x-L.*x./(1+M.*x).*(1+N.*y)
g = @(x,y)L.*x./(1+M.*x)*(1+N.*y)-D-F./(1+H.*y)
[X,Y] = meshgrid(1:5,1:5);
surf(X, Y, f(X,Y));
hold on;
surf(X, Y, g(X,Y));