Studied from its original page

Farr circular mortality diagram

Farr circular mortality diagram · circular diagrams 'of a new form'

Made by: William Farr
Year: 1852
Field: Medicine
Kind: Data display
Room: Change over time

See the original page — Plate 4, 'Temperature and Mortality of London for every week of 11 years (1840-50.)' (leaf n196 of b21516911); Plate V at leaf n198 (https://archive.org/download/b21516911/page/n198_w2000.jpg)

Published 1852 (A) and Farr died in 1883, so life+70 ended in 1953 (B).

The data it needs

cycle identity (one circle each) · categorical · year
phase angle · ordinal · week
value radius · quantitative · deaths or degrees F
reference radius of the reference circle · quantitative · same as value

Built in 9 steps, as its maker described

construction and reading of the circular diagrams, printed p. xlviii (archive leaf n63); Plate IV (eleven yearly circles, 1840-50) and Plate V (eight circles, plague years) not located in the scan

Skeleton drawing, not the original plate

121 other forms share this skeleton

Source

Farr 1852, Report on the Mortality of Cholera in England 1848-49

Attribution checked against the source

Searches, not citations

archive.org commons.wikimedia.org scholar.google.com