Cholera Simulation

Cholera Simulation preview image

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Default-person Jesse PANTIN (Author)

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patches-own [infected?]
turtles-own [cholera gender age]

to setup
  ca
  reset-ticks
  setup-patches
  setup-turtles
  colors
end 

to go
  colors
  infect-water
  infect-people
  birth
  ask turtles [
    wiggle
    set age (age + 1) ; their age is in weeks
    if (age > 3910) [die] ; since ticks are weeks and 3910 are the average weeks a person lives in their life, they will die after 3910 weeks
  ]
  tick
  if (count turtles > 5000 or count turtles < 1) [stop]
end 

to wiggle ; moving of the people
  fd 1
  lt random 61 - 30
end 

to infect-water ; determines whether or not the water is infected
  ask patches with [infected? = 0] [ ; infecting water
    if (any? turtles-here with [cholera = 1]) [set infected? 1]
  ]
  ask patches with [infected? = 1] [
    if (random 100 < Disinfect) [set infected? 0] ; disinfecting water
  ]
end 

to infect-people ; determines whether or not someone is infected
  ask turtles with [cholera = 0] [
    if (pcolor = violet) [
      set cholera 1 ; infecting people from water
    ]
    if (any? turtles-here with [cholera = 1]) [set cholera 1] ; infecting people from other people
  ]
    ask turtles with [cholera = 1] [ ; rate of survival, death or continuing with the disease
      if (random 100 < 10) [die]
    if (random 100 < 10) [set cholera 0]
    ]
end 

to colors ; shows who and which patches are infected
  ask patches [
    if (infected? = 1) [set pcolor violet]
    if (infected? = 0) [set pcolor blue]
    if (infected? = -1) [set pcolor black]
  ]
  ask turtles [
    if (cholera = 1) [set color red]
    if (cholera = 0) [set color green]
    if (cholera = -1) [set color grey]
  ]
end 

to birth ; reproducing population
  ask turtles with [gender = 1] [
    if (any? turtles-here with [gender = -1] and random 100 >= 90) [hatch 1
      [set cholera 0
       set age 0
        ifelse (random 2 = 0) [set gender 1] [set gender -1]
      ]
    ]
  ]
end 

to setup-patches
    ask patches [set infected? -1]
  ask patches with [pxcor > -5 and pxcor < 5 and pycor > -5 and pycor < 5]
  [set infected? 0] ; creates water
end 

to setup-turtles
  ask turtles [set gender 0]
  set-default-shape turtles "person"
  crt 100 [ ; creates people
    setxy random-xcor random-ycor
    set age random 3910
    set cholera 0
  ]
  ask turtles ; creates vaccinated and infected people
  [if (random 100 < numVaccinated) [set cholera -1]
    if (cholera = 0 and random 100 < numInfected) [set cholera 1]
  ]
  ask n-of 50 turtles [set gender 1] ; creating genders
  ask turtles with [gender = 0] [set gender -1]
end 

There is only one version of this model, created 3 months ago by Jesse PANTIN.

Attached files

File Type Description Last updated
Cholera Simulation.png preview Preview for 'Cholera Simulation' 3 months ago, by Jesse PANTIN Download

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