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Corona Coxombs by Kenneth Field

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    About

     
    This map uses coxcomb charts to show the change in Covid-19 confirmed cases over time, by country. It is not linked to a live data source. It currently displays the period from 22nd January to 18th March 2020. It will be updated periodically.

    coxcomblegend-02-01.png

    Each coxcomb is divided into 57 segments, one per day, and is read clockwise from the top from earlier dates to later dates. Each segment is split into four areas, showing active cases, new cases, recovered patients, and the deceased. The outer grey proportional symbol shows each country's March 18th total scaled to one another.

    What the map does show you:
    • A summary of the number of cases across time, aggregated for country totals
    • The pattern of onset and rise as the disease takes hold
    • The point at which the number of new daily cases begins to fall
    • How the number of recovered patients rises through time
    • The number of deaths and whether the total keeps rising or is abated
    • The lag in onset for different countries compared to China (the first case)

    What the map does not show you:
    • Live updates to the data
    • Individual risk
    • Mortality rates
    • Local patterns
    • Spatial diffusion pathways of the disease
    • Advice for your own health and safety

    For live data please visit the John Hopkins University dashboard.

    Questions and comments about the map to Kenneth Field (@kennethfield)

    Built with ArcGIS Pro with help from Linda Beale, Craig Williams, and John Nelson

    For a good discussion on Florence Nightingale and her coxcombs see this Medium article by RJ Andrews

    Wash your hands, isolate, look out for the vulnerable, support your health workers and stop bloody hoarding you idiots.