Agent-Based and PDE Models for Foraging Locusts

This repo contains codes used in creating the work of

A J Bernoff, M Culshaw-Maurer, R A Everett, M E Hohn, W C Strickland, J Weinburd. Agent-based and continuous models of hopper bands for the Australian plague locust: How resource consumption mediates pulse formation and geometry. (Preprint)

The repo contains one Matlab script and three directories:

video_ABM.m
ABM_in_R
Publication2020_MATLAB
Sobol

`video_ABM.m`

This self-contained script can be run in Matlab to simulate our agent-based model and save a video of the simulation. Adjust the variable plot_frames to control the frequency of plotting and saving frames to the video.

ABM_in_R

Another version of the ABM, written in R. Includes two subdirectories:

misc_scripts (includes code used to generate Fig 1)
model_scripts (includes a full version of the ABM)

Publication2020_MATLAB

Everything needed to reproduce Figs 2-8. Each Matlab script fig#.m generates a figure from the paper. By setting the value of the flag new_data, the script will either load precisely the data used in the paper (=0) or generate new data (=1) and overwrite existing. Includes two subdirectories:

data (contains numerically generated data for figures, .mat format)
functions (includes Matlab scripts called by the figure scripts)

Sobol

All the code used to conduct the Sobol sensitivity analysis and generate Figs 9-11.

Acknowledgements

This material grew out of a collaboration that began at a Mathematics Research Communities of the American Mathematical Society on Agent-based Modeling in Biological and Social Systems (2018), under National Science Foundation grant DMS-1321794. Additional support came from the Institute for Advanced Study Summer Collaborators Program, two Simons Foundation Collaboration Grants (Bernoff and Strickland), and an NSF Mathematical Sciences Postdoctoral Research Fellowship grant DMS-1902818 (Weinburd).