Maurer No. 73

Hill Eucyclic

This example shows a world map using the Hill eucyclic projection, a pseudoconic, equal-area projection. The map displays landmasses in dark gray with country boundaries in white, overlaid on a graticule and a sphere outline. The code builds the visualization with `d3.geo.hill` from the geo.projection plugin, `d3.geo.path` for rendering, and `d3.geo.graticule` for the grid. World data is loaded as TopoJSON from a `world-50m.json` file and converted to GeoJSON using `topojson.feature` and `topojson.mesh`.

79% match

Briesemeister

This example presents a world map using the Briesemeister projection, an oblique Hammer projection with a 1.75:1 aspect ratio and an oblique orientation centered at 10°E 45°N. It shows the landmasses in dark gray with white country boundaries, overlaid on a graticule, all within a sphere outline. The visualization uses d3.geo.projection with a raw Hammer projection, rotated and scaled, to render SVG paths for land, boundaries, and graticule. The geographic data for the land and boundaries originates from a world-50m TopoJSON file, processed with topojson.feature and topojson.mesh.

79% match

Mollweide

This example shows a world map projected using the Mollweide projection, with graticule lines, land masses in dark fill, and country boundaries in white. The map is rendered as SVG using D3 v3 with the `d3.geo.mollweide` projection, `d3.geo.path`, and `d3.geo.graticule`. Land and boundary data come from a TopoJSON file of world countries, processed with `topojson.feature` and `topojson.mesh`. The code defines sphere, stroke, fill, graticule, land, and boundary CSS classes to style the visual layers.

79% match

Spherical Mercator

The example shows the spherical Mercator projection applied to a world map, displayed within a circular outline that represents the globe. The map renders landmasses in dark gray with white country boundaries, overlaying a graticule grid of meridians and parallels. Built with d3.geoMercator and d3.geoPath, it draws the sphere outline, graticule, and world geography via SVG paths. Geographic data comes from the world-atlas TopoJSON dataset, processed with topojson-client to extract land and country meshes.

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.

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.

Larrivée

This example displays a world map using the Larrivée projection, a pseudocylindrical equal-area projection that resembles a flattened globe with curved meridians. Landmasses appear as dark shapes with white country boundaries, set against a graticule and a spherical outline. The map is rendered with SVG via D3’s `d3.geo.path` and the `d3.geo.larrivee` projection from the geo.projection plugin, while TopoJSON data (`world-50m.json`) supplies the land and country meshes. The visualization includes a graticule layer and a white-filled sphere background.

Eckert I

This example displays a world map using the Eckert I projection, with landmasses filled in dark gray and country boundaries outlined in white against a graticule grid. The spherical outline is drawn with a thick black stroke and white fill, emphasizing the projection’s oval shape. The visualization uses D3 v3, the `d3.geo.eckert1` projection from the geo.projection plugin, and `d3.geo.path` to render geographic features. World data comes from a TopoJSON file (`world-50m.json`), processed with `topojson.feature` and `topojson.mesh` to separate land and country boundaries.