Published
Edited
Oct 12, 2021
1 fork
map = {
let h = (width<600) ? width + 200: width * 0.75,
z = (width<600) ? 6.5 : 7,
container = DOM.element('div', { style: `width:${width}px;height:${h}px` });
yield container;
let map = L.map(container).setView([44.6,-69.0], z);
let osmLayer = L.tileLayer('https://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}@2x.png', {
attribution: '© <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
}).addTo(map);
L.TopoJSON = L.GeoJSON.extend({
addData: function (data) {
var geojson, key;
if (data.type === "GeometryCollection") {
for (key in data.objects) {
if (data.objects.hasOwnProperty(key)) {
geojson = topojson.feature(data, data.objects[key]);
L.GeoJSON.prototype.addData.call(this, geojson);
}
}
return this;
}
L.GeoJSON.prototype.addData.call(this, data);
return this;
}
});
L.topoJson = function (data, options) {
return new L.TopoJSON(data, options);
};
//create an empty geojson layer
//with a style and a popup on click
let overlay = L.topoJson(zips, {
style: function(feature) {
let zip =feature.properties.ZCTA5CE10, dat = getDataForFeature(zip, 'rebates'),
c = dat ? colorRamp(dat) : '#fff',
o = dat ? 1 : 0;
return {
color : c,
stroke: '#999',
opacity: 1,
weight: 0.5,
fillOpacity: o
}
},
onEachFeature: function(feature, layer) {
let rebates = getDataForFeature(feature.properties.ZCTA5CE10, 'rebates') ?
getDataForFeature(feature.properties.ZCTA5CE10, 'rebates') : 0,
count = getDataForFeature(feature.properties.ZCTA5CE10, 'count') ?
getDataForFeature(feature.properties.ZCTA5CE10, 'count') : 0,
s = (count==1) ? '' : 's';
layer.bindPopup('<p>ZIP code '+feature.properties.ZCTA5CE10+'</p><p>Subsidies paid: $'+rebates+' for ' + count + ' car' + s +'</p>')
}
}).addTo(map);
let legend = L.control({position: 'topleft'})
legend.onAdd = function (map) {var div = L.DomUtil.create('div', 'legend'); return l};
legend.addTo(map);
}
L = require('leaflet@1.2.0')
html`<link href='${resolve('leaflet@1.2.0/dist/leaflet.css')}' rel='stylesheet' />`
topojson = require("topojson-client@3")
zips = {
let response = await fetch('https://gist.githubusercontent.com/vigorousnorth/d1cb350a6cbb8bdc54be64d9698ba3aa/raw/6cec88320aeaeed9386f14083ae4ed2629f380dd/MaineZCTAs_topo.json');
let json = await response.json();
return topojson.feature(json, json.objects.zipsNAD83)
}
data = {
let raw = await FileAttachment("EV_Rebates_04.14.2020@3.csv").text();
return d3.csvParse(raw, (d) => { d.rebates = +d.rebates; d.count = +d.count; return d; })
}
getDataForFeature = (d, key) => {
let a = false;
for (let i = 0; i < data.length; i++) {
if (d == data[i].zip) { a = data[i][key]; break; }
else { continue }
}
return a;
}
import {legend} from "@d3/color-legend"
colorRamp = d3.scaleLinear()
.domain([0, 10000, 40000])
.range(["#fdd0a2", "#d94801","#88419d"])
l = legend({
color: colorRamp,
width: (width<500) ? width*0.6:320,
title: "New car subsidies per ZIP code",
tickFormat: "$0s"
})
d3 = require('d3@5.0')
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