Gringorten Equal-Area

Cylindrical Equal-Area

This example shows a world map rendered using the cylindrical equal-area projection, with dark landmasses and light country boundaries overlaid on a graticule. The projection’s shape is modified by selecting different standard parallels, such as Gall–Peters or Hobo–Dyer, highlighting how the choice affects the map’s proportions. The visualization uses `d3.geoCylindricalEqualArea` and `d3.geoPath` from the `d3-geo-projection` library to draw the paths, while geodata is loaded as TopoJSON from a GitHub-hosted file. The SVG output is styled with CSS classes for the graticule, land, and boundaries.

85% match

Transverse Mercator

This example demonstrates the transverse Mercator map projection, displaying world landmasses and country boundaries within a graticule grid. The map is rendered as SVG using the D3.js library, specifically employing the `d3.geoTransverseMercator` projection and `d3.geoPath` for drawing geometries. World data comes from the `world-atlas` package, processed with `topojson-client` to extract land and boundary features. The visualization includes a spherical outline, a graticule, and styled land and boundary paths, all centered within a 960x960 canvas.

80% match

Gall–Peters

This example demonstrates the Gall–Peters projection, an equal-area map projection that preserves relative sizes of landmasses. The visualization displays a dark world map with country boundaries drawn in white, overlaid on a graticule grid. The map is rendered using SVG via the d3.geo.path and d3.geo.cylindricalEqualArea APIs, with the projection configured with a 45-degree parallel. Geographic data comes from a 50m-resolution world TopoJSON file, processed through the topojson library to extract land and boundary features.

80% match

August Projection

This example displays a world map using the August projection, a pseudocylindrical equal-area projection that curves parallels and meridians into distinctive intertwined shapes. The map renders land masses in dark gray with white country boundaries overlaid on a graticule, all enclosed within a spherical outline. Using D3 v3, the code employs `d3.geo.august` for the projection, `d3.geo.path` to draw geographic features, and `d3.geo.graticule` for the grid. TopoJSON data provides the world land and country boundaries, loaded from an external JSON file.

Gnomonic

This example shows the world map projected using the gnomonic projection, where great circles appear as straight lines and distortion increases toward the edges. The map is clipped at a 90-degree angle, displaying landmasses in dark gray with white country boundaries over a graticule grid. The visualization uses D3 v3’s `d3.geo.gnomonic` projection and `d3.geo.path` to render SVG paths from TopoJSON world data, with the graticule drawn via `d3.geo.graticule`. The code sets projection scale, translation, and precision before loading the `world-50m.json` file.

Van der Grinten IV

This example displays a world map using the Van der Grinten IV projection, filled with dark land masses and white country boundaries against a graticule grid. The map is rendered as SVG using D3 v3, with the projection accessed via `d3.geo.vanDerGrinten4` from the geo.projection plugin. Geographic data comes from a TopoJSON file of world land and country shapes, processed with `topojson.feature` and `topojson.mesh`. A sphere outline and graticule are drawn with `d3.geo.path` and `d3.geo.graticule`.

Lambert Azimuthal Equal-Area

This example visualizes world landmasses and country boundaries using a Lambert azimuthal equal-area projection, centered on the globe to produce a circular map. The graticule and sphere outline frame the map, while land is filled dark against a light background. Built with D3 v4, it uses `d3.geoAzimuthalEqualArea` for projection, `d3.geoPath` for rendering shapes, and `d3.geoGraticule` for the grid, pulling geographic data from a world-50m JSON dataset via `topojson`. The SVG output is styled with CSS classes for land, boundaries, and graticule.