As nosotros approach the 201st birthday of British doctor John Snow nosotros tin flaming celebrate the occasion with a novel interactive version of his famous Broadstreet Pump map.
In 1854 Snow plotted the deaths caused past times cholera inwards the Soho expanse of London. The distribution of the dots helped Snow notice that cholera occurred most ofttimes alongside those who drank from the Broad Street H2O pump.
Kyle Walker's Broad Street Pump map overlays round out polygons over John Snow's master map. The polygons are scaled to demonstrate the publish of cholera deaths recorded at each address. Kyle has created interactive map tiles from John Snow's master map, which agency y'all tin flaming come across Snow's ain information on the map as well as and the locations of the neighborhood's H2O pumps.
If y'all desire to practice your ain map from John Snow's information therefore convey a await at Robin's Blog. Robin Wilson has mapped John Snow's information onto an Ordnance Survey map as well as likewise made the information available via Google Fusion Tables.
If y'all desire to know to a greater extent than well-nigh how Kyle created his interactive John Snow map therefore convey a await at his ship service on Using Custom Tiles inwards an RStudio Leaflet Map. The article explains how he created the map tiles from an ikon file of John Snow's master map using gdal2tiles.
