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Fork of Fork of Fork of ILINet Flu Surveillance Data

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AAlankruthSai
Last edited Mar 26, 2022
Created on Mar 26, 2022

This visualization shows national ILI total flu cases per year, with lines from 2015 through 2019 plotted over time to reveal seasonal patterns and year-over-year differences. It uses vega-lite-api to create a line chart where each year is aggregated by summing counts, but encodes the year field with an unordered color scheme, making trend comparisons harder. The chart loads CSV data via d3.csv from a Gist, renders with vega-lite’s SVG output, and applies custom axis styling from a config module. Data originates from CDC FluView Interactive.

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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