PlotEcoPhasePlane
| PlotEcoPhasePlane[{var1,var1min,var1max},{var2,var2min,var2max}] |
| PlotEcoPhasePlane[attributes,{var1,var1min,var1max},{var2,var2min,var2max}] |
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Basic Examples
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A species-based model — the Rosenzweig-MacArthur predator-prey model:
In[1]:=
Needs["EcoEvo`"];
In[2]:=
SetModel[{Pop[n]{Equationn(1-n/k)-anpn/(n+h),ColorGreen},Pop[p]{Equationp(apn/(n+h)-m),ColorRed},Parameters{an≥0,ap≥0,h≥0,m>0,k>0}}];
In[3]:=
an=1;ap=2;h=1;m=1;k=2;
In[4]:=
PlotEcoPhasePlane[{n,0,2},{p,0,2}]
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———
The trait-based Lotka-Volterra competition model:
In[1]:=
Needs["EcoEvo`"];
In[2]:=
SetModelGuild[n]Equationr[]-Suma,,j.,,Traits{-1≤x≤1},Parameters{σ>0};a[xi_,xj_]:=E^(-1/2*(xi-xj)^2/σ^2);r[x_]:=1-x^2;σ=1/2;
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In[3]:=
PlotEcoPhasePlane[{-0.5,0.5},{,0,1.2},{,0,1.2}]
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Out[3]=
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