Supplement 1. Data and the R and WinBUGS code used in the paper.

File List code_and_data.zip hwa_wombling.zip womblingRcode.R womblingFuncs.R areal_wombling.bug local_edge_wombling.bug Description "code_and_data.zip" : An archive containing all data and code described below (5 files). "hwa_wombling.zip" : A shapefile of the county-level spread data and covariates used in the paper. "womblingRcode.R" : This file contains R code to perform the following analyses: 1. Prepare geospatial data and covariates (contained in hwa_wombling.zip) for use in WinBUGS 2. Call WinBUGS code (using R2WinBUGS package) for the areal and local-edge wombling models. 3. Read output from WinBUGS and calcualte boundary probabilities. 4. Make maps of output that highlight boundary probabilities. "womblingFuncs.R" : R code containing helper functions for plotting, etc called by code in womblingRcode.R. "areal_wombling.bug" : This file contains WinBUGS code to fit a Bayesian areal wombling model. "local_edge_wombling.bug" : This file contains WinBUGS code to fit a Bayesian local edge wombling model.