The avatar for @stuwilmur
Stu Murray
Public
Edited
Oct 5, 2022
Fork of Countries Pan & Zoom
•
1 fork
2
Mapping
Spinning globe input, with neighbour and selected country colouring, zoom and rotationWorld map country selector input, with neighbour colouring, zoom and rotationTube map SVG with zoom and pan
World Map Input with Zoom and Pan
World Map Input with Zoom and PanWorld map country selector input, with neighbour colouring, zoom and panCountries Pan & Zoom, with neighbour colouringCountries Pan & Zoom
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Inputs
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chart
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countryNamesLookup.get(chart)
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ids = {
let s = new Set(land50.features.map(d=>+d.id))
let a = Array.from(s);
return a}
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numcolors = ids.length
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colours = d3.range(numcolors).map(x => d3.interpolateSpectral(x / numcolors))
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colourmap = {
let m = new Map()
ids.forEach((d,i) => m[d] = colours[i])
return m
}
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reversecolourmap = {
let m = new Map()
ids.forEach((d,i) => m[colours[i]] = d)
return m
}
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projection = d3[projectionName]().precision(0.1)
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height = {
const [[x0, y0], [x1, y1]] = d3.geoPath(projection.fitWidth(width, sphere)).bounds(sphere);
const dy = Math.ceil(y1 - y0), l = Math.min(Math.ceil(x1 - x0), dy);
projection.scale(projection.scale() * (l - 1) / l).precision(0.2);
return dy;
}
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sphere = ({type: "Sphere"})
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land50 = FileAttachment("countries-50m.json").json().then(world => topojson.feature(world, world.objects.countries))
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topojson = require("topojson-client@3")
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d3 = require("d3@6")
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