Zombies in the City

Supplementary Materials

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This page provides the model and supplementary charts for: Badham JM & Osborn J-A (2015), Zombies in the city: A NetLogo model, in R Smith? (ed) Mathematical Modelling of Zombies, University of Ottawa Press.

The paper describes a model to examine the spread of a zombie infestation. It was developed to investigate whether the superior speed of uninfected humans and their capacity to improve as they gain fighting experience enable humans to survive despite apparently overwhelming odds.

Charts concerning who wins: the proportion of zombies in the final population

  • Impact of speed here
  • Impact of skill (at speed = 1) here
  • Impact of skill (at speed = 3) here

Other charts

  • Human and zombie survival rates here
  • Final population (at speed = 1) here
  • Final population (at speed = 3) here
  • Duration and truncation here

Download NetLogo zombie model. The NetLogo software is available from here.

The world is conceptualised as a city, with streets laid out on a grid. Humans run away from zombies and zombies walk toward humans. Fights occur between humans and zombies wherever both types of agents share a patch (or street intersection). A winning human kills a zombie (and increases their chance of winning their next fight), and a losing human becomes a zombie. Documentation is included in the model.