Circles on a Map

Circles on a Map

This visualization maps global population data by country, using circle area to represent population size for 2018. Users can pan and zoom across a natural Earth projection, and hover to reveal exact population counts. The visualization uses d3.geoPath, d3.geoNaturalEarth1, d3.scaleSqrt, and d3.zoom, with data from a CSV joined to TopoJSON world atlas geometry. A size legend and color legend are rendered as SVG, with circles and country borders styled for clarity.

LLeandro Souza

Circles on a Map

This visualization displays global population data for 2018 using scaled circles positioned at country centroids on a natural Earth projection map. Circle area encodes population magnitude, while hovering reveals exact population figures and regional names. The map supports pan and zoom interactions through d3.zoom. Built with d3.geoNaturalEarth1 and d3.geoPath for map rendering, it uses d3.scaleSqrt for circle sizing and d3.scaleOrdinal with a spectral scheme for the categorical color legend. Population data comes from a CSV file processed alongside TopoJSON world boundaries.

EElena Dreosti

Circles on a Map

This visualization displays global population by country using scaled circles on a natural Earth projection map, with circle area proportional to each country's 2018 population. Users can pan and zoom via d3.zoom and hover over countries to see exact population figures through SVG title tooltips. The example uses d3.geoNaturalEarth1 and d3.geoPath for map rendering, d3.scaleSqrt for circle sizing, and topojson for world geometry. Population data is loaded from a CSV file, and countries lacking data appear in red rather than gray.

Jjesramyep1263

Circles on a Map

This visualization displays global population data for 2018 using circles positioned on a natural Earth projection map. The area of each circle encodes a country’s population, and hovering reveals exact values alongside the country name, while pan and zoom controls allow exploration. The map is rendered as SVG using d3.geoPath with TopoJSON world data, while population values are loaded from a CSV. Circle sizes derive from a d3.scaleSqrt, and a custom legend communicates scaling. The example also includes a color legend component and employs d3.zoom for interactivity.

PPhilRG

Circles on a Map

This visualization displays global population data for 2018 by projecting circles onto a natural Earth map, with circle area proportional to each country’s population. Users can pan and zoom, and hovering reveals country names and population values. The code uses `d3.geoNaturalEarth1`, `d3.geoPath`, `d3.geoCentroid`, and `d3.zoom` for the map and interactions. Data comes from a CSV joined with TopoJSON world atlas geometries, and circles are rendered as SVG elements. A square-root scale controls circle sizes, accompanied by custom size and color legends.

Pputrafandy

Circles on a Map

This visualization uses a natural Earth projection to display global population data for 2018, with each country represented by a circle whose area is proportional to its population. The map supports pan and zoom interactions, and hovering over a country reveals its population through a tooltip. Built with D3.js, it uses `d3.geoPath` for map rendering, `d3.scaleSqrt` for the size scaling, and custom legends to explain both the color scheme and circle sizes. Population data comes from a CSV file joined to a TopoJSON world atlas.

GGamue-cmd

circles on map

This visualization displays global population by country, with circle area scaled proportionally to 2018 population data from a CSV file. The map renders using d3.geoNaturalEarth1 projection and d3.geoPath with TopoJSON world atlas data, while hover tooltips reveal precise population figures. Interactive features include d3.zoom for panning and zooming, with circles positioned using geoCentroid. Population values drive a d3.scaleSqrt sizing scale, and a custom sizeLegend component visualizes the quantitative mapping alongside a color legend using d3.scaleOrdinal.

YYounes Mohamed ABDAT

Circles on a Map

This interactive map visualizes global population by country in 2018, using circles whose area scales with population size. Users can pan, zoom, and hover over countries to see population details or a missing-data note. The visualization uses D3 v5, with `d3.geoPath` and the Natural Earth projection to render country outlines, while `d3.scaleSqrt` maps population to circle radii. Interactive zoom is handled via the `d3.zoom` module, and a custom size legend provides scale reference. Data comes from a UN population CSV merged with TopoJSON world atlas geometry.

0007ebey