Data Visualization Developer at The Associated Press
Public
Edited
Mar 8, 2023
svg`<svg width = ${width} height = ${height}>
${tile().map(([x, y, z], i, {translate: [tx, ty], scale: k}) => svg`
<image xlink:href="${getHillShade(x, y, z)}" x="${Math.round((x + tx) * k)}" y="${Math.round((y + ty) * k)}" width="${k}" height="${k}">
`)}
</svg>`
${tiles.map(t => svg`
<path fill = 'darkgrey' d = "${path(t.data.water)}" /> <path stroke = 'black' fill = 'none' d = "${path(t.data.roads)}" />` )}
projection = d3.geoMercator()
.center([-122.916611, 48.636669])
.scale(Math.pow(2, 21) / (2 * Math.PI) )
.translate([width / 2, height / 2])
path = d3.geoPath(projection)
tile = d3.tile()
.size([width, height])
.scale(projection.scale() * 2 * Math.PI)
.translate(projection([0, 0]))
tiles = {
return Promise.all(tile().map(async d => {
d.data = await fetch(`https://tile.nextzen.org/tilezen/vector/v1/256/all/${d[2]}/${d[0]}/${d[1]}.json?api_key=-M9QAjq_QHSaJVfspNI_eA`).then(res => res.json())
return d
}))
}
function getHillShade(x, y, z) {
return `https://server.arcgisonline.com/ArcGIS/rest/services/Elevation/World_Hillshade/MapServer/tile/${z}/${y}/${x}.png`
}
height = 500
d3 = require("d3-geo@2", "d3-tile@1")
imageList.map(block => {
return [{block: block.block, text: block.text}, ...block.images]
}).flat(2)
imageList[0].images
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