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Fork of Fork of ILINet Flu Surveillance Data

✓ Published0🌍 Public
SShan Gao
Last edited May 5, 2021
Created on May 5, 2021

A multi-line chart displays annual ILI flu case totals across U.S. regions, with each line representing a year from 2015 to 2019 and encoded using an unordered color scale for the ordered year field, an improper choice that hampers temporal comparisons. The visualization aggregates weekly ILITOTAL values per year, region, and week, then plots them against week number using Vega-Lite’s API with markLine. Data originates from CDC FluView Interactive, loaded via d3.csv, and rendered with SVG through vega-tooltip for interactivity.

AI-generated description

This variant of the original work by Yu Zhang demonstrates improper use of an unordered color encoding for an ordered field (year), which makes it more difficult to read the chart, because you can't say anything like "darker is more recent".

A visualization constructed using the vega-lite-api.

This graph shows the national ILI total cases annually. The curves from 2015 to 2019 to the present date are displayed. This plot achieves the visualization of the annual ILI total patterns in general, and also provide a direct comparison year-over-year. We can tell 2018 is the year with highest Flu cases in mid February time, while 2019 has a more stretched Flu season comparing to other years.

When interations are introduced for the visualization together with Choropleths Map, we can select the individual yearly curve and present the map for that given year. We can also select a region or state and present a different portion of the dataset here to see more localized patterns.

See Data on Gist: ILINet Flu Surveillance Data

The original data comes from the CDC FluView Interactive

MIT Licensed

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