Rotating Orthographic

Rotating Orthographic

A rotating orthographic projection of the world, rendered via canvas animation, shows the globe slowly spinning as landmasses and country borders move across the sphere. The code uses `d3.geo.orthographic` with a clip angle to define the projection, `d3.geo.path` to draw land, borders, and graticule, and `d3.json` to load world-110m GeoJSON data. A timer updates the rotation angle over time, clearing and redrawing the canvas each frame.

89% match

Rotating Orthographic

This rotating orthographic projection displays a graticule and the equator as animated SVG paths on a sphere. It uses the d3.geo.orthographic projection with a rotating view, updating the projection’s rotation based on a timed loop. The sphere, graticule, and equator are drawn as SVG paths via d3.geo.path, with the animation driven by d3.timer incrementally adjusting the rotation angles.

85% match

Orthographic

An orthographic projection displays a hemisphere of the Earth as seen from space, centered on the equator at 90°W. The visualization uses a dark landmass, white country boundaries, and a graticule grid over a sphere outline, all rendered as SVG paths. The code applies `d3.geo.orthographic` with a clip angle and rotation to define the view, and the `d3.geo.path` API projects the topojson world data. The map updates when loading the 50m-resolution world dataset.

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Rotating Globe

A rotating orthographic globe displays world landmasses and graticule meridians in SVG. The Earth spins continuously via a d3.timer that updates the d3.geoOrthographic projection’s rotation, with d3.geoPath rendering the geographic features from TopoJSON world-atlas data. A hover effect darkens countries, while a static color legend lists continents. Zoom and pan are supported through d3.zoom, with the globe group transformed on user input.

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Interactive Orthographic

This interactive orthographic map displays a world landmass that the viewer can rotate by moving the mouse. As the cursor moves, the projection’s center re-orients to the new longitude and latitude, redrawing the SVG paths in real time. Built with D3 v3, it uses `d3.geo.orthographic`, `d3.geo.path`, and a linear scale to map pixel coordinates to degrees. The geographic data comes from a TopoJSON file (`world-110m.json`) loaded via `d3.json`, with features extracted using `topojson.feature`.

Orthographic Clipping

A rotating orthographic globe displays a graticule of latitude and longitude lines at uniform 10-degree increments, with a circular clipping boundary. The globe slowly spins via a d3.timer that updates the projection rotation over time. The example uses d3.geo.orthographic with clipAngle(90) and d3.geo.path to render the graticule as an SVG path, while a separate SVG circle outlines the globe’s edge.

Rotating Transverse Mercator

A rotating transverse Mercator projection continuously spins a world map around its central meridian, showing how the projection distorts shapes and areas away from the axis of rotation. The animation uses a dark canvas with white country borders and a semi-transparent graticule, all rendered via `d3.geoPath` and Canvas 2D drawing. Land polygons and country boundaries come from TopoJSON data in the world-atlas package, while a `d3.timer` updates the projection’s rotation each frame. The code specifies `d3.geoTransverseMercator`, `d3.geoGraticule10`, and `topojson.feature` and `topojson.mesh` for data processing.

83% match

Orthographic Grid

An orthographic grid of graticule lines at 10-degree intervals rotates slowly over time, demonstrating an azimuthal projection that resembles a globe viewed from space. The visualization uses D3 v3’s `d3.geo.orthographic`, `d3.geo.path`, and `d3.geo.graticule` to render SVG paths, while a `d3.timer` continuously updates the projection’s rotation based on a fixed velocity vector. A static circle outlines the globe’s edge, and the animation shows how latitude and longitude lines curve as the view shifts.