Brandon Pazmino
University of Illinois at Urbana-Champaign | ‘21
Bachelor of Science in Statistics
R| Python| SQL
Published unlisted
Edited
Feb 4, 2021
md`# Globe 2`
d3 = require("https://d3js.org/d3.v4.min.js")
html`<div id="map" style="width: 100%;"></div>`
url = "https://raw.githubusercontent.com/mgckind/desaccess/deslabs/easyweb/static/tiles/all_tiles.json"
tiles = (await fetch(url)).json()
{
let width = d3.select("#map").node().getBoundingClientRect().width
let height = 500
const sensitivity = 75
let context = this ? this.getContext("2d") : DOM.context2d(width,width);
let projection = d3.geoOrthographic()
.scale(250)
.center([0, 0])
.rotate([0,-30])
.translate([width / 2, height / 2])
const initialScale = projection.scale()
let path = d3.geoPath().projection(projection)
let svg = d3.select("#map")
.append("svg")
.attr("width", width)
.attr("height", height)
let globe = svg.append("circle")
.attr("fill", "aliceblue")
.attr("stroke", "#000")
.attr("stroke-width", "0.2")
.attr("cx", width/2)
.attr("cy", height/2)
.attr("r", initialScale)
const graticule = d3.geoGraticule()
svg.append("path")
.datum(graticule())
.attr("class", "graticule")
.attr("d", path)
.attr('fill', 'none')
.attr('stroke', '#cccccc')
.attr('stroke-width', '0.5px');
svg.call(d3.drag().on('drag', () => {
const rotate = projection.rotate()
const k = sensitivity / projection.scale()
projection.rotate([
rotate[0] + d3.event.dx * k,
rotate[1] - d3.event.dy * k
])
path = d3.geoPath().projection(projection)
svg.selectAll("path").attr("d", path)
}))
.call(d3.zoom().on('zoom', () => {
if(d3.event.transform.k > 0.3) {
projection.scale(initialScale * d3.event.transform.k)
path = d3.geoPath().projection(projection)
svg.selectAll("path").attr("d", path)
globe.attr("r", projection.scale())
}
else {
d3.event.transform.k = 0.3
}
}))
let map = svg.append("g")
d3.json("https://raw.githubusercontent.com/michael-keith/mps_interests/master/view/js/charts/data/world_map.json", function(err, d) {
map.append("g")
.attr("class", "countries" )
.selectAll("path")
.data(d.features)
.enter().append("path")
.attr("class", d => "country_" + d.properties.name.replace(" ","_"))
.attr("d", path)
.attr("fill", "mintcream")
.style('stroke', 'black')
.style('stroke-width', 0.3)
.style("opacity",0.8)
})
d3.json(url, function(err, d) {
map.append("g")
.attr("class", "countries" )
.selectAll("path")
.data(d.features)
.enter().append("path")
.attr("class", d => "country_" + d.properties.name.replace(" ","_"))
.attr("d", path)
.attr("fill", "mintcream")
.style('stroke', 'blue')
.style('stroke-width', 0.3)
.style("opacity",0.8)
})
}
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