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Polyconic

This visualization demonstrates the Polyconic map projection, a compromise projection that preserves distances along the central meridian and each parallel. It displays the world’s landmasses as solid black shapes with white country boundaries, overlaid on a graticule grid and an outlined sphere. The example uses the D3 v3 library with the `d3.geo.polyconic` projection plugin, `d3.geo.path` for rendering, and `topojson.v1` to process world-50m.json geographic data, drawing everything as SVG paths.

71% match

Untitled

A world map rendered in the Mercator projection displays country boundaries as grey paths with thin white strokes. The example demonstrates loading GeoJSON-derived topology data from a local `world-110m2.json` file and converting it to SVG paths using `d3.geoPath`. The map is centered and rotated with `d3.geoMercator` and `projection.rotate`, and country features are extracted via `topojson.feature` from the TopoJSON library. The page uses D3 v7 to fetch the data asynchronously with `d3.json` and append the resulting paths to an SVG container.

Sspace-captain96

71% match

Let's make a map with D3.js!

This example uses D3.js and TopoJSON to generate an orthographic projection map of the world. It loads world country boundaries from a JSON file hosted on unpkg, converts the TopoJSON data into geographic features, and renders each country as a green SVG path with a subtle black stroke. The visualization employs `d3.geoOrthographic` and `d3.geoPath` to create the projection, with the dark blue background and minimal styling coming from the linked CSS.

Nnouralkhoury

71% match

Craster Parabolic

This example displays a world map projected using the Craster parabolic projection, with graticule lines, country boundaries, and landmasses rendered in SVG. The visualization uses d3.geo.craster from the d3.geo.projection.v0 library, along with d3.geo.path for geographic path generation and topojson.v1 to parse world-50m.json data. A sphere outline and fill are drawn first, followed by graticule and geographic features from the TopoJSON file, with styling applied via CSS classes.

Orthographic

This example shows a globe rendered with the orthographic projection, displaying landmasses and country boundaries over a graticule, all clipped to a sphere. The visualization uses D3 v3’s `d3.geo.orthographic` for projection, `d3.geo.path` for drawing, and `d3.geo.graticule` for the grid. Land and boundary data come from a TopoJSON world file (world-50m), processed with `topojson.feature` and `topojson.mesh`. The sphere is drawn twice: once as a black stroke and once as a white fill, with the land and boundaries layered in between.

Untitled

This example shows a world map rendered as light green countries against a blue sphere, with black country borders at low opacity. It uses D3’s `geoNaturalEarth1` projection and `geoPath` to draw geographic shapes, while `topojson.feature` extracts country polygons from the world-atlas dataset (110m resolution). The SVG is populated asynchronously after fetching the TopoJSON file, and the sphere is drawn first as a filled path. Styling comes entirely from CSS classes.

Ffaaty

See-Through Globe

A rotating see-through globe displays both the front and back hemispheres simultaneously. The orthographic projection, implemented with `d3.geo.orthographic`, first renders the entire sphere as a light outline, then draws the front-facing land polygons in a darker tone using the `d3.geo.path` API on a Canvas. A graticule overlays the sphere, and the entire scene rotates continuously via a timer. The code loads world-110m GeoJSON data from a gist and relies on `topojson.feature` to extract land polygons.

dataMap

This example renders a 3D orthographic globe using D3.js and TopoJSON. It displays world countries as light green polygons with subtle black strokes atop a blue sphere. The code uses `d3.geoOrthographic` and `d3.geoPath` to project geographic coordinates to SVG paths. Country boundaries come from the World Atlas TopoJSON dataset (110m resolution), with features extracted via `topojson.feature`. The visualization demonstrates how D3 can combine geographic projections with topojson data to create interactive-style map views.

Kknstrom