Spinning globe.
From D3 in Depth book by Peter Cook.
Last active
January 17, 2021 00:57
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Spinning globe
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| license: gpl-3.0 | |
| height: 440 | |
| border: no |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <head> | |
| <title>Geo (spinning))</title> | |
| </head> | |
| <style> | |
| body { | |
| font-family: "Helvetica Neue", Helvetica, sans-serif; | |
| font-size: 14px; | |
| color: #333; | |
| } | |
| </style> | |
| <body> | |
| <div id="content"> | |
| <canvas width="800" height="400"></canvas> | |
| </div> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.2.2/d3.min.js"></script> | |
| <script> | |
| var geojson = {} | |
| var context = d3.select('#content canvas') | |
| .node() | |
| .getContext('2d'); | |
| var projection = d3.geoOrthographic() | |
| .scale(300); | |
| var geoGenerator = d3.geoPath() | |
| .projection(projection) | |
| .pointRadius(4) | |
| .context(context); | |
| var yaw = 300; | |
| function update() { | |
| projection.rotate([yaw, -45]) | |
| context.clearRect(0, 0, 800, 600); | |
| context.lineWidth = 0.5; | |
| context.strokeStyle = '#333'; | |
| context.beginPath(); | |
| geoGenerator({type: 'FeatureCollection', features: geojson.features}) | |
| context.stroke(); | |
| // Graticule | |
| var graticule = d3.geoGraticule(); | |
| context.beginPath(); | |
| context.strokeStyle = '#ccc'; | |
| geoGenerator(graticule()); | |
| context.stroke(); | |
| yaw -= 0.2 | |
| } | |
| // REQUEST DATA | |
| d3.json('https://gist.githubusercontent.com/d3indepth/f28e1c3a99ea6d84986f35ac8646fac7/raw/c58cede8dab4673c91a3db702d50f7447b373d98/ne_110m_land.json', function(err, json) { | |
| geojson = json; | |
| window.setInterval(update, 100); | |
| }) | |
| </script> | |
| </body> | |
| </html> |
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