Circles on a Map

100%

Circles on a Map

✓ Published80🌍 Public

Last edited Jan 8, 2024

Created on Sep 26, 2018

This visualization maps population by country using circles positioned at each country’s centroid, with circle area proportional to 2018 population data loaded from a CSV and joined to TopoJSON world geometry via d3.csv and topojson.feature. d3.geoNaturalEarth1, d3.geoPath, and d3.geoCentroid project the map, while d3.scaleSqrt sizes the circles. The map supports pan and zoom through d3.zoom, and hovering reveals country names and population values via SVG title elements. A custom size legend and a separate color legend are rendered as SVG groups.

AI-generated description

Visualizing population by country using circles on a map! The area of each circle corresponds to the population of the country it represents. You can also pan & zoom, and hover over each country for more information.

MIT Licensed

Similar vizzes

Loading thumbnail…

Circles on a Map

This visualization displays the 2018 population of countries using circles positioned on a natural Earth projection map. Circle area encodes population magnitude, with colors distinguishing countries that have data from those missing it. A size legend and color legend explain the encoding. Hovering reveals country names and population values, while pan and zoom enable exploration. The code uses d3.geoPath, d3.geoCentroid, d3.scaleSqrt, and d3.zoom, rendering with SVG. Data merges a CSV of population statistics with TopoJSON world geometry (50m resolution) loaded via d3.json and processed with topojson.feature.

Pputrafandy

95% match

Loading thumbnail…

Circles on a Map

This example visualizes population by country using circles positioned on a natural Earth projection map, with circle area proportional to 2018 population data loaded from CSV. The map supports panning and zooming via d3.zoom, and hovering over a country reveals its name and population in a tooltip. The visualization uses d3.geoPath and topojson for rendering country boundaries, d3.scaleSqrt for sizing circles, and d3.scaleOrdinal with schemeSpectral for a color legend, all rendered as SVG with d3 v5.

GGiovanniD_

95% match

Loading thumbnail…

Circles on a Map

Circles on a Map visualizes country population for 2018 using sized circles positioned at each country’s centroid on a natural Earth projection. The visualization uses d3.geoPath to render the map and d3.geoCentroid to place the circles, with d3.scaleSqrt mapping population values to circle area. Users can pan and zoom via d3.zoom, and hover over countries to see pop-up tooltips with population details. Data comes from a UN population CSV and TopoJSON world atlas, loaded asynchronously via d3.csv and d3.json. A size legend is built with d3.scaleSqrt’s ticks.

Ttasqon

95% match

Loading thumbnail…

Circles on a Map

This visualization displays the population of each country as a circle on a natural Earth projection map, with the circle’s area proportional to the 2018 population data. Hovering over a country reveals its name and population, while pan and zoom are enabled. The map is rendered as SVG using `d3.geoPath` with a `geoNaturalEarth1` projection, and population data is joined from a CSV to country geometries using `topojson`. A square-root size scale, implemented with `d3.scaleSqrt`, drives the circle radii, and a legend is built through custom `sizeLegend` and `colorLegend` functions.

Hhannahwilson2

95% match

Loading thumbnail…

Circles on a Map

This visualization displays global population by country using circles overlaid on a natural Earth projection map, with circle area proportional to 2018 population data. Users can pan and zoom the map and hover over countries to see region names and population figures. The implementation uses D3 v5 with `geoNaturalEarth1`, `geoPath`, `geoCentroid`, and `scaleSqrt` for sizing, while loading data from a CSV file and TopoJSON world atlas. Circle positions derive from projected centroids, and a custom size legend communicates the population scale.

EElena Dreosti

95% match

Loading thumbnail…

Circles on a Map

This visualization displays the population of countries as circles on a natural Earth projection map, with the area of each circle proportional to the country's 2018 population. It uses d3.geoPath for geographic boundaries and d3.scaleSqrt for sizing circles, while enabling pan and zoom through a zoom event handler. Hovering reveals tooltips with population details via title elements. The visualization sources data from a CSV file merged with TopoJSON geometries, rendering through d3 and SVG, and includes a custom size legend with tick marks for population values.

Nnoura94

95% match

Loading thumbnail…

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

95% match

Loading thumbnail…

Circles on a Map

This example visualizes population by country using scaled circles overlaid on a natural Earth projection map, with circle area proportional to each country’s 2018 population. Pan and zoom are enabled via d3.zoom, and hovering over a country reveals its exact population through a title tooltip. The map is rendered as SVG using d3.geoPath and topojson, while a d3.scaleSqrt maps population values to circle radii. A size legend generated with custom d3 code displays population ticks, and the data is loaded from a CSV and a TopoJSON world atlas file.

Wwaqastufail

95% match