Predator-Prey Phase Portrait
Lotka-Volterra dynamics — click canvas to set initial conditions
Phase
Time series
α (prey growth)
1.0
β (predation rate)
0.1
δ (predator growth)
0.1
γ (predator death)
1.0
Clear orbits
Period:
—
Equilibrium:
—
Lotka-Volterra:
ẋ = αx − βxy
ẏ = δxy − γy
Click the canvas to launch orbits from any initial condition. Nullclines shown in green/red.