Gall–Peters

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.

86% match

Gringorten Equal-Area

This example demonstrates the Gringorten equal-area projection, a map projection that preserves area while arranging the continents in an unusual, diamond-like layout. The visualization renders world landmasses in dark gray with white country boundaries against a graticule grid, all framed within a sphere outline. The code uses the `d3.geoGringorten` projection from the d3-geo-projection library, combined with `d3.geoPath` for rendering geographic data. World map data is loaded from a 50m resolution GeoJSON file via `d3.json`, and the graticule is generated using `d3.geoGraticule`. The SVG output is styled with CSS for the graticule, land, and boundary features.

80% match

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.

79% 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.

Polar Azimuthal Equal-area

This example visualizes the Earth using the polar azimuthal equal-area projection, with landmasses in black and country boundaries in white against a graticule. The map is centered on the North Pole and rendered as an SVG, with a sphere outline and fill. The code uses `d3.geo.azimuthalEqualArea()` for the projection and `d3.geo.path()` to draw features from a TopoJSON world dataset loaded via `d3.json`.

Eckert VI

This example demonstrates the Eckert VI map projection, a pseudocylindrical equal-area projection that displays the entire globe within an ellipse. The map shows world land masses as dark regions with white country boundaries overlaid on a graticule, all rendered as SVG. The code uses the D3 v3 library with the `d3.geo.eckert6` projection plugin, `d3.geo.path` for projecting geographic features, and `d3.geo.graticule` for the coordinate grid. World data comes from a 50m resolution GeoJSON file loaded via `d3.json`, and TopoJSON is used to extract land and boundary shapes.

Tobler–Mercator

This example demonstrates the Tobler–Mercator projection, a modified Mercator projection that preserves area. The world map is rendered with graticule lines, country boundaries, and a white sphere outline. Built with D3 v4, it combines `d3.geoProjection` with a custom projection function and `d3.geoPath` for geographic rendering. The map uses TopoJSON data from the world-atlas package, with land and country boundary geometries loaded via `d3.json` and processed using `topojson.feature` and `topojson.mesh`. The visualization is fully SVG-based.

Bottomley

This example displays a world map using the Bottomley projection, a pseudocylindrical equal-area projection with curved parallels. Landmasses are filled in dark gray with white country boundaries, overlaid on a graticule and a black sphere outline. The code uses `d3.geo.bottomley()` from the d3.geo.projection plugin, rendered as SVG via `d3.geo.path()`. World data comes from a TopoJSON file, with countries meshed via `topojson.mesh` and land converted through `topojson.feature`.