The avatar for @sw1227
sw1227
Vis / Geo / Generative / Simulation / AI / Math 🥑 Portfolio: https://sw1227.github.io/portfolio
Published
Edited
Jul 20, 2019
1 fork
Importers
8 stars
Geo
Realtime Rain Radar (Japan)Flood depth map on 3D terrainTest: Mapbox GL JS v2Drawing isobar on mapAsteroid Itokawa 3D [9MB]Pseudo-contouringDecoding PNG elevation tileJapan FloodBilinear interpolation of tileGradient of MountainOverlay DIY contour on mapContoured mountainious terrain 3DDem to contour by d3H3 index visualizer
Fetch elevation tile
Mapbox GL + GeoJSON PolygonH3 GeoJsonMountain Terrain 3D
Also listed in…
Utility
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fetchTile = function(coord) {
return new Promise(resolve => {
fetch(`https://cyberjapandata.gsi.go.jp/xyz/dem/${coord.z}/${coord.x}/${coord.y}.txt`)
.then(response => response.text())
.then(text => text.split("\n"))
.then(rows => rows.slice(0, rows.length - 1)) // Last row: empty
.then(rows => rows.map(r => r.split(",").map(d => d === "e" ? 0 : parseFloat(d)))) // e: sea
.then(data => resolve(data))
.catch(error => {throw error});
});
}
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tileCoord = ({z: 13, x: 7262, y: 3232})
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data = fetchTile(tileCoord)
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imshow(data, 1, d3.interpolateViridis)
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