Amend, augment and aid the analysis of John Snow's cholera data.
Features:
Fixes three apparent coding errors in Dodson and Tobler's 1992 digitization of Snow's map.
"Unstacks" the data in two ways to improve analysis and visualization.
Computes pump neighborhoods based on Voronoi tessellation and walking distance.
Adds the ability to overlay graphical features like kernel density, Voronoi diagrams, and notable landmarks (the plague pit, the Lion Brewery, etc.).
Includes a variety of helper functions to find and locate cases, roads, pumps and walking paths.
Appends street names to roads data.
Includes the revised pump data used in the second version of Snow's map.
Adds two different aggregate time series fatalities data from the Vestry report.
To learn more, start with the vignettes:
vignette("duplicate.missing.cases")
vignette("unstacking.fatalities")
vignette("pump.neighborhoods")
vignette("roads")
vignette("time.series")