Winkel Tripel

Winkel Tripel Graticule

This example displays a global graticule—a mesh of latitude and longitude lines—projected using the Winkel Tripel projection, with a thicker outline emphasizing the map’s outer boundary. The visualization uses D3 v3’s `d3.geo.winkel3()` projection, `d3.geo.path()` to render the projected geometry, and `d3.geo.graticule()` to generate the grid. The graticule lines and outline are drawn as SVG paths, with the projection scaled and centered to fit a 960×500 canvas.

88% match

Rotating Winkel Tripel

A rotating Winkel Tripel projection continuously spins the world map around its longitude axis. The example shows both landmasses and graticule lines drawn on a canvas, with the rotation driven by a timer that updates the projection’s rotation each frame. It uses D3 v3 with the `d3.geo.winkel3` projection, `d3.geo.path`, and Canvas 2D context, while loading world-110m TopoJSON data. The graticule and its outline are stroked separately to distinguish the grid from the map frame.

85% match

Wiechel

This example visualizes the world on a Wiechel projection, a pseudo-azimuthal map that appears as a heart-shaped sphere. It displays continents in dark fill and country boundaries in white, overlaid with a graticule grid, all within a circular outline. The code uses the `d3.geo.wiechel` projection, `d3.geo.path`, and `d3.geo.graticule` from the d3.geo.projection library to render the map as SVG. World map data is loaded from a 50m GeoJSON file via `d3.json` and processed with `topojson`.

79% match

Van der Grinten III

The Van der Grinten III projection renders a world map with a circular boundary, showing landmasses as dark shapes with white country borders over a graticule of meridians and parallels. The visualization uses a D3 v3 geo path with the `d3.geo.vanDerGrinten3` projection from the extended geographic projections plugin. It loads world-50m TopoJSON data, converts it with `topojson.feature` and `topojson.mesh`, and draws the sphere, graticule, and land boundaries as SVG paths, styled with stroke and fill classes.

78% match

Mollweide Hemispheres

This example displays a world map using the Mollweide projection, interrupted into two hemispheres—northern and southern—which are rotated twenty degrees and centered on a 960-by-500 SVG canvas. The map shows landmasses as dark shapes with white country boundaries, overlaid on a graticule, all clipped to a circular sphere. It uses the `d3.geo.interrupt` and `d3.geo.mollweide.raw` projections with `d3.geo.path`, and renders geographic data from a World 50m TopoJSON dataset, drawing both land polygons and a mesh of country boundaries.

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`.

World map VI

This example presents an interactive world map using the Winkel Tripel projection, rendering countries from Natural Earth TopoJSON data with graticules and a sphere outline. It incorporates zooming via `d3.zoom` and semantic zoom by counter-scaling country name labels to remain readable. A level-of-detail mechanism hides labels for small regions based on zoom level and computed area using `d3.geoArea`. The visualization applies desaturated category colors from `d3.schemeCategory10` and uses `d3.geoPath` for geographic paths, with tooltips showing country names via SVG `<title>` elements.

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Van der Grinten II

This example displays a world map using the Van der Grinten II projection, rendered as an SVG with landmasses in black and country boundaries in white. The code employs `d3.geo.vanDerGrinten2`, `d3.geo.path`, and `d3.geo.graticule` from the D3 v3 extended projection plugin. It overlays a graticule and loads world-50m.json data via the `topojson` library to draw geographic features.