EJ Fox & Ian Johnson
streaming data, code, acid, design
Spike mapBubble mapChoroplethD3 U.S. Map (Live Projection)FIPS County Code BrushCOVID-19 Cases by CountyCMU COVIDcast API: Map makerGeoJson BoilerplateMethods of Comparison, ComparedCOVID-19: Cumulative deaths per thousand (US Counties)ChoroplethCOVID-19 in the USSanders Donation 2020 County LevelTrump Donation 2020 County LevelBiden Donation 2020 County LevelUSA County Heat MapUSA County Heat MapUS County Dot MapAncestry by U.S. CountyAncestry by US County MapTry to impeach this? Challenge accepted!Streaming ShapefilesHow well does population density predict U.S. voting outcomes?Bivariate choroplethB&W Choropleth
Map Maker Dot Density: Cumulative Covid Cases
showCountyLines = false
map = makeMap(nationShape)
ny = makeMap(getState("New York"))
fl = makeMap(getState("Florida"))
ca = makeMap(getState("California"))
tx = makeMap(getState("Texas"))
function makeMap(zoomShape) {
let ctx = DOM.context2d(mapWidth, mapHeight);
// ctx.canvas.width = mapWidth; // * window.devicePixelRatio;
// ctx.canvas.height = mapHeight; // * window.devicePixelRatio;
ctx.canvas.width = mapWidth;
ctx.canvas.height = mapHeight;
ctx.canvas.style.width = mapWidth + "px";
ctx.canvas.style.height = mapHeight + "px";
let projection = d3
.geoAlbersUsa()
.fitSize([mapWidth - 50, mapHeight - 50], zoomShape);
let path = d3.geoPath(projection).context(ctx);
ctx.fillStyle = "white";
ctx.fillRect(0, 0, mapWidth, mapHeight);
// let r = 0.5;
let r = 1;
ctx.strokeStyle = "#111";
ctx.lineWidth = 2;
ctx.globalAlpha = 1;
ctx.beginPath();
path(zoomShape);
ctx.stroke();
shapesWithData.forEach(d => {
ctx.strokeStyle = "#ddd";
ctx.lineWidth = .5;
ctx.globalAlpha = 0;
if (d.nyt) ctx.globalAlpha = 1;
if (showCountyLines) {
ctx.beginPath();
path(d);
ctx.stroke();
}
const fillColor = d3.color(colorScale(colorScale.domain()[1]));
fillColor.opacity = 0.25;
ctx.fillStyle = fillColor.toString();
if (d.points && d.points.features) {
d.points.features.forEach(feature => {
// const {
// properties: { color }
// } = feature;
const {
geometry: {
coordinates: [x, y]
}
} = feature;
let c = projection([x, y]);
if (!c) return;
// console.log({ x, y, feature });
// ctx.fillStyle = color;
ctx.fillRect(c[0], c[1], r, r);
});
}
});
ctx.fillStyle = "#111";
ctx.beginPath();
ctx.font = '24px Helvetica';
ctx.fillText(normalDate(date), mapWidth / 2 - 40, 35);
ctx.fill();
return ctx.canvas;
}
nytDataWithRollingAverages = {
const byCounty = Array.from(d3.group(rawData, d => d.county));
const byCountyCoerced = byCounty.map(d => {
const [name, values] = [d[0], d[1]];
return { name, values };
});
return byCountyCoerced;
}
nytDots = d3.group(rawData, d => d.date)
nytDots.get(normalDate(date))
nytCounties = d3.group(nytDots.get(normalDate(date)), d => d.fips)
// projection = d3.geoAlbersUsa().fitSize([mapWidth, mapHeight], nationShape)
// .translate([mapWidth / 2, mapHeight / 2])
// .scale([mapWidth])
import { rawData, data as nytdata } with {
nytStart as startDate
} from "@jashkenas/united-states-coronavirus-daily-cases-map-covid-19"
nytStart = normalDate(start_date)
nytdata
legend({
color: colorScale,
title: "Total Cumulative Cases",
width: width
})
extent = d3.extent(rawData, d => +d.cases)
// data = fetchData(signalMap[signal], date, fips)
// metrics = new Map(data.epidata.map(d => [d.geo_value, d.value]))
// reduceMetrics = data.epidata.reduce((m, d) => {
// m[d.geo_value] = d.value;
// return m;
// }, {})
// metricExtent = d3.extent(Array.from(metrics), d => d[1])
dotScale = d3
.scaleLinear()
// .domain(metricExtent)
.domain([0, 5000])
.range([0, 500])
// rScale = d3
// .scaleSqrt()
// .domain(metricExtent)
// .range([0.1, 12])
// popExtent = d3.extent(shapesWithData, s => {
// return s.population;
// })
// rPopScale = d3
// .scaleSqrt()
// .domain(popExtent)
// .range([0.1, 12])
// rPopScale(762)
usShapes = d3.json("https://cdn.jsdelivr.net/npm/us-atlas@3/counties-10m.json")
countyShapes = topojson
.feature(usShapes, usShapes.objects.counties)
.features.sort((a, b) => +a.id - +b.id)
nationShape = topojson.feature(usShapes, usShapes.objects.nation).features[0]
stateShapes = topojson
.feature(usShapes, usShapes.objects.states)
.features.sort((a, b) => +a.id - +b.id)
getState("New York")
getState = function(state) {
return stateShapes.filter(
d => d.properties.name.toLowerCase() == state.toLowerCase()
)[0];
}
shapesWithData = countyShapes.map(s => {
let nyt = nytCounties.get(s.id) || [];
const nextData = {
...s,
population: pops.get(s.id),
// metric: metrics.get(s.id),
centroid: turf.centroid(s),
nyt: nyt[0]
};
nextData.points = generateDensity(nextData);
return nextData;
})
moment = require('moment')
import { slider, checkbox, radio, color } from "@jashkenas/inputs"
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