Points on a Map

Points on a map

This example displays a world map with points representing cities, sized by population. The map is rendered as SVG using React, with D3's `geoNaturalEarth1` projection and `geoPath` drawing landmasses, graticules, and sphere outlines. City coordinates are projected onto the map, and circles are scaled with `scaleSqrt`. The code loads world topology from a JSON via `useWorldAtlas` and city data from a CSV using the `csv` utility, styling land areas and points with CSS.

SSai Phaltankar

Points on a Map

This example displays a natural Earth projection map with country boundaries, graticules, and city points overlaid as semi-transparent teal circles. The visualization uses d3.geoNaturalEarth1 and d3.geoPath to render landmasses and interior borders from World Atlas TopoJSON data, while a CSV of world cities is mapped through the projection to position each dot. The React component structure manages asynchronous data loading via useWorldAtlas and useCities hooks, with SVG rendering styled through CSS to create a clean, polished aesthetic.

Aaakarsh satyam

Points on a Map

A world map displays country boundaries and graticules, with hundreds of semi-transparent points marking city locations. The visualization uses D3’s `geoNaturalEarth1` projection and `geoPath` to render landmasses and interiors from World Atlas Topojson, while city coordinates are projected and drawn as SVG circles. React manages the component state, fetching data via `useEffect` and D3’s `csv` and `json` loaders.

FFloorNummer

points on a Map

This example displays a world map with semi-transparent points representing cities, overlaid on a natural Earth projection. The visualization uses D3 v5’s `geoNaturalEarth1` and `geoPath` to render the sphere, graticules, landmasses, and country interiors from a TopoJSON world atlas, while city coordinates from a CSV are projected and drawn as circles. React manages the component state, fetching data asynchronously with `useEffect` and rendering the SVG marks via a custom `Marks` component.

Rrsulli4

Points on a Map

This example displays a world map with city points overlaid, using a Natural Earth projection via d3.geoNaturalEarth1 and d3.geoPath. The map includes land boundaries, graticules, and interiors rendered as SVG paths from World Atlas TopoJSON data. City locations, loaded from a CSV with d3.csv, are plotted as semi-transparent circles. The visualization is built with React and D3 v5, demonstrating a clean, styled cartographic composition with an equirectangular-like aesthetic.

Ppnlinyz

Points on a Map

A world map rendered with a natural Earth projection displays city locations as circular points, using teal landmasses with graticules and gray interior borders. The visualization loads geographic data from a TopoJSON world-atlas file and city coordinates from a CSV dataset, processing both through React hooks. D3’s `geoPath` and `geoNaturalEarth1` project the map, while the points are positioned by projecting each city’s longitude and latitude. SVG circles with a radius of four pixels mark each city, and axes are absent, keeping the focus on spatial distribution.

OOlof Ollerstam

Points on a Map - React, D3

This example displays a world map with city points, using a natural Earth projection to render country boundaries, graticules, and interior borders from World Atlas TopoJSON data. City locations are plotted as semi-transparent circles based on latitude and longitude coordinates loaded from a CSV file. The visualization is built with React for component structure and D3 v5’s `geoNaturalEarth1`, `geoPath`, and `geoGraticule` for map geometry, rendered as SVG elements.

NNelson M

Points on a Map

A world map displays country boundaries and graticules over a light gray sphere, with semi-transparent teal circles sized by city population. The visualization uses d3.geoNaturalEarth1 for projection and d3.geoPath to render land, interiors, and sphere outlines from TopoJSON data. City coordinates are projected and drawn as SVG circles, with radii scaled using d3.scaleSqrt applied to population values from a CSV dataset. The React component structure manages state for both world atlas and city data.

Jj-PGi