Software Engineer
Published
Edited
Jun 10, 2020
1 fork
chart = {
const svg = d3.create("svg")
.attr("viewBox", [0, 0, width, height])
.style("overflow", "visible");
svg.append("g")
.call(xAxis)
.selectAll('text')
.attr("color", "gray")
.attr('font-size',18)
svg.append("g")
.call(yAxis)
.selectAll('text')
.attr("color", "gray")
.attr('font-size',18);
const gradient = DOM.uid();
svg.append("linearGradient")
.attr("id", gradient.id)
.attr("gradientUnits", "userSpaceOnUse")
.attr("x1", 0)
.attr("y1", 0)
.attr("x2", 0)
.attr("y2", height)
.selectAll("stop")
.data([
{offset: 0, color: "red"},
{offset: 1, color: "steelblue"}
])
.join("stop")
.attr("offset", d => d.offset)
.attr("stop-color", d => d.color);
const path = svg.append("g")
.attr("fill", "none")
.attr("stroke", gradient)
.attr("stroke-width", 5)
.attr("stroke-linejoin", "round")
.attr("stroke-linecap", "round")
.selectAll("path")
.data(data.series)
.join("path")
.style("mix-blend-mode", "multiply")
.attr("d", d => line(d.values));
svg.call(hover, path);
return svg.node();
}
data_raw = {
//const data = d3.csvParse(await FileAttachment("brazil_mobility@2.csv").text());
const data = await d3.csv("https://hackcovid.s3-us-west-2.amazonaws.com/data/data_mobility.csv", d3.autoType)
const columns = data.columns.slice(2);
return {
series: data.map(d => ({
name: d.sub_region_1.replace(/, ([\w-]+).*/, " $1"),
type: d.local.replace(/, ([\w-]+).*/, " $1"),
values: columns.map(k => +d[k])
})),
dates: columns.map(d3.utcParse("%Y-%m-%d"))
};
}
state = "DF"
data = {
const series = data_raw.series.filter(d => d.name === state);
const dates = data_raw.dates;
const type = data_raw.type;
return {
series,
dates
}
}
function hover(svg, path) {
if ("ontouchstart" in document) svg
.style("-webkit-tap-highlight-color", "transparent")
.on("touchmove", moved)
.on("touchstart", entered)
.on("touchend", left)
else svg
.on("mousemove", moved)
.on("mouseenter", entered)
.on("mouseleave", left);
const dot = svg.append("g")
.attr("display", "none");
dot.append("circle")
.attr("r", 2.5);
const dotTextDate = dot.append("text")
.attr("font-family", "sans-serif")
.attr("font-size", 18)
.attr("text-anchor", "middle")
.attr("y", -8);
const dotTextValue = dot.append("text")
.attr("font-family", "sans-serif")
.attr("font-size", 18)
.attr("text-anchor", "middle")
.attr("y", 8);
function moved() {
d3.event.preventDefault();
const mouse = d3.mouse(this);
const xm = x.invert(mouse[0]);
const ym = y.invert(mouse[1]);
const i1 = d3.bisectLeft(data.dates, xm, 1);
const i0 = i1 - 1;
const i = xm - data.dates[i0] > data.dates[i1] - xm ? i1 : i0;
const s = d3.least(data.series, d => Math.abs(d.values[i] - ym));
path.attr("stroke", d => d === s ? null : "#ddd").filter(d => d === s).raise();
dot.attr("transform", `translate(${x(data.dates[i])},${y(s.values[i])})`);
dotTextDate
.text(`${formatTime(data.dates[i])}`);
dotTextValue
.text(`${s.values[i]}%`)
d3.select("#mobility-title").text(s.type);
}
function entered() {
path.style("mix-blend-mode", null).attr("stroke", "#ddd");
dot.attr("display", null);
}
function left() {
path.style("mix-blend-mode", "multiply").attr("stroke", null);
dot.attr("display", "none");
d3.select("#mobility-title").text("");
}
}
formatTime = d3.utcFormat("%d/%m/%y");
height = 600
width = 600
margin = ({top: 20, right: 30, bottom: 30, left: 55})
x = d3.scaleUtc()
.domain(d3.extent(data.dates))
.range([margin.left, width - margin.right])
y = d3.scaleLinear()
.domain([-100, 100]).nice()
.range([height - margin.bottom, margin.top])
xAxis = g => g
.attr("transform", `translate(0,${height - margin.bottom})`)
.call(d3.axisBottom(x).ticks(width / 120).tickSizeOuter(0))
yAxis = g => g
.attr("transform", `translate(${margin.left},0)`)
.call(d3.axisLeft(y).tickFormat(d => `${d}%`))
.call(g => g.select(".domain").remove())
.call(g => g.select(".tick:last-of-type text").clone()
.attr("x", 3)
.attr("text-anchor", "start")
.attr("font-weight", "bold")
.attr("id", "mobility-title")
.text(""))
.call(g => g.selectAll(".tick line")
.select(function() { return this.parentNode.appendChild(this.cloneNode()); })
.attr("stroke-opacity", d => d === 100 ? 0.1 : 0.3)
.attr("stroke-width", 2)
.attr("stroke", "#ccc")
.attr("x2", width - margin.left - margin.right))
line = d3.line()
.defined(d => !isNaN(d))
.x((d, i) => x(data.dates[i]))
.y(d => y(d))
d3.timeFormatDefaultLocale(locale);
locale = (
{
"decimal": ",",
"thousands": ".",
"grouping": [3],
"currency": ["R$", ""],
"dateTime": "%d/%m/%Y %H:%M:%S",
"date": "%d/%m/%Y",
"time": "%H:%M:%S",
"periods": ["AM", "PM"],
"days": ["Domingo", "Segunda", "Terça", "Quarta", "Quinta", "Sexta", "Sábado"],
"shortDays": ["Dom", "Seg", "Ter", "Qua", "Qui", "Sex", "Sáb"],
"months": ["Janeiro", "Fevereiro", "Março", "Abril", "Maio", "Junho", "Julho", "Agosto", "Setembro", "Outubro", "Novembro", "Dezembro"],
"shortMonths": ["Jan", "Fev", "Mar", "Abr", "Mai", "Jun", "Jul", "Ago", "Set", "Out", "Nov", "Dez"]
}
)
d3 = require("d3@5", "d3-array@2")
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