--- Simple model that simulates the growth of two populations. -- @arg data.population The initial size of the first population. The default value is 60. -- @arg data.growth The growth rate of the first population. The default value is 0.5, growing -- fifty percent in each time step. -- @arg data.growthChange The change of the growth rate. The growth -- rate is multiplied by this value in each time step. The default value is 1, meaning -- that growth rate does not change. -- @arg data.finalTime The final time of the simulation. The default value is 100. -- @image population-growth.bmp PopulationGrowth = Model{ population = 60, growth = 0.5, growthChange = 1, finalTime = 7, execute = function(model) model.population = model.population * (1 + model.growth) model.growth = model.growth * model.growthChange end, init = function(model) model.chart = Chart{ target = model, select = "population" } model.timer = Timer{ Event{action = model}, Event{action = model.chart} } end }