Pollution Around America and Over Time

Pollution in US with counties by React and d3

This interactive choropleth visualizes PM2.5 pollution levels across US counties from 2000 to 2018. Users can drag a vertical slider or press a play button to animate through years, with county colors transitioning smoothly via the sequential `d3.interpolateYlGnBu` scale. Built with React and D3 v5, it uses `d3.geoPath` and `geoIdentity` projection to render county boundaries from the US Atlas TopoJSON, while county pollution data is loaded from a CSV and mapped to each feature. The legend displays the concentration range, and hovering over a county reveals its name and value.

Ggeorgeeeee

83% match

Pollution in US with counties by React and d3

This choropleth map displays PM2.5 air pollution concentrations across US counties for the year 2000, with counties lacking data rendered in grey. Built with React and d3.v5, the visualization uses `d3.geoIdentity` and `d3.geoPath` to project county boundaries from a TopoJSON atlas, while a `d3.scaleSequential` with an `interpolateYlGnBu` color scheme encodes pollution values. The data originates from a CSV file of county-level PM2.5 measurements, filtered through a custom React hook and passed as a Map to the SVG marks component.

AAbdul Salam Almadani

82% match

Fork of Pollution in US with counties by React and d3

This interactive choropleth map visualizes PM2.5 concentration levels across US counties from 2000 to 2018. A vertical slider and play button animate through time, updating the color-coded counties using React’s state management. The SVG map uses `d3.geoPath` with `geoIdentity` projection for county and state boundaries from the us-atlas TopoJSON. Data from a CSV file is filtered by year, and the sequential YlGnBu color scale is applied via `d3.scaleSequential` and `d3.interpolateYlGnBu`. Hovering reveals county and state names with pollution values via tooltips.

AAndres de la Garza

81% match

Json AQI Data in America with Histogram and Brushing

This interactive visualization displays US Environmental Protection Agency Air Quality Index (AQI) readings for ozone monitoring sites, overlaid as colored circles on a geographic map of the United States. The map uses d3.geoAlbersUsa with d3.geoPath, and each circle’s color reflects its AQI value via a d3.scaleQuantile. A brushing histogram at the bottom, built with d3.brushX and d3.bin, filters the map’s circles by date range, with the time series generated using d3.scaleTime and d3.timeMonths. The application is built in React with D3 v5, rendering all elements as SVG.

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Fork of map of epa data sites

This example shows U.S. Environmental Protection Agency air quality data as a bubble map, with circles representing sites and sized by their AQI value over a geoAlbersUsa projection rendered with d3.geoPath. The visualization combines a state-atlas overlay with data-driven circles, and also includes a date histogram that bins the same dataset by month to show average AQI trends. It uses React hooks to load the data via d3.csv and the U.S. Atlas TopoJSON, while d3.scaleSqrt, d3.bin, and d3.scaleTime handle quantitative scaling and temporal aggregation.

Vvipin kumar paikra

AQI data in America over histogram

This visualization maps Air Quality Index (AQI) data across the United States, displaying each monitoring site as a circle sized proportionally to its AQI value. The map uses a `geoAlbersUsa` projection and `geoPath` to render state boundaries from TopoJSON, while circles are scaled with `scaleSqrt` on a dataset from a CSV file. The React-based interface integrates D3 v5 for data loading and map rendering, with SVG elements providing a clear, interactive view of regional air quality variations.

map of epa data sites

This map displays EPA air quality monitoring sites across the United States as blue circles overlaid on a geographic outline of the states. The visualization uses React to render SVG elements, with D3’s `geoAlbersUsa` projection and `geoPath` to draw state and interior boundaries from a TopoJSON US Atlas. Data is loaded via `d3.csv` from a GitHub-hosted file, with point locations plotted by longitude and latitude. A square root scale (`scaleSqrt`) maps AQI values to circle radii, though the current radius is fixed at 5 pixels.

new data

A choropleth map of U.S. counties shows ozone levels for each year from 2000 to 2021, with a vertical slider and play button to animate through time. County colors use a sequential yellow-green-blue scale, while state boundaries are drawn as thin lines. Built with React and D3 v5, it uses `geoPath` with a fitted Albers projection, a TopoJSON atlas, and a Map lookup from CSV data. Hovering a county reveals its name and ozone value.