Joana SimoesReported deaths in Soho outbreak in London 1854 - It is always fun to revisit Snow's analysis with modern GIS tools! #python #SnowKaggle #GIS #Analysis #BTS #BigData https://en.wikipedia.org/wiki/John_Snow
The analysis using #Thiessen polygons shows an even more evident concentration of cholera cases around the broad street pump #Voronoi #SnowAnalysis #SnowKaggle #GIS #BTS
Christian Willmes@doublebyte but the point of the spatial analysis is to find the contaminated pump. The pump locations (red dots) are the "center" points of the constructed thiessen polygons... "winner" is the polygon with the most colera cases.
@cwillmes yes: it was the broad street pump. Once it was closed, the cholera cases dropped!
@doublebyte yes, I know! I use this data set in my spatial analysis class to teach the students point pattern analysis. :)
@doublebyte I got the data from the QGIS training manual: https://docs.qgis.org/3.40/en/docs/training_manual/processing/john_snow.html