function onMouseOver(selected) {
const gNodes = d3.selectAll("svg > g").nodes();
d3.select(gNodes[2])
.selectAll("*")
.attr("stroke-opacity", params.opacityOut);
d3.select(gNodes[3])
.selectAll("*")
.attr("fill-opacity", params.opacityOut);
d3.select(gNodes[4])
.selectAll("*")
.attr("fill-opacity", params.opacityOut);
// http://bl.ocks.org/mstanaland/6106487
// formatComma = d3.format(",")
// body.append("p").text(function() { return 'd3.format(",") : ' + formatComma(number); });
const code = d3.select(this).attr("class");
d3.selectAll(`.${code}`)
// .text(d => `${d.code}: ${Math.round(d.yValues[d.yValues.length - 1])}`)
.text(d => `${d.code}: ` + d3.formatLocale(pt_BR).format(",d")(d.yTotal))
.attr("fill-opacity", params.opacityHover)
.attr("stroke-opacity", params.opacityHover)
.attr("stroke-width", 3)
.attr("r", 3);
}
function onMouseOut(selected) {
const code = d3.select(this).attr("class");
d3.selectAll(`.${code}`)
.text(d => `${d.code}`)
.attr("stroke-width", 1)
.attr("r", 3);
d3.selectAll(`path`).attr("stroke-opacity", params.opacitySteady);
d3.selectAll(`circle`).attr("fill-opacity", params.opacitySteady);
d3.selectAll(`text`).attr("fill-opacity", params.opacitySteady);
}
function drawTooltips(svg) {
svg
.append("g")
.selectAll("text")
.data(chartData)
.join("text")
.text(d => `${d.code}`)
.attr("font-size", 10)
.attr("font-family", "Helvetica, sans-serif")
.attr("class", d => `${d.code}`)
.attr("fill", d => color(d.region))
.attr("fill-opacity", params.opacitySteady)
.attr("x", d => d3.min([x(d.yValues.length - 1) + 4, x(params.xmax) - 10]))
.attr("y", d => y(d.yValues[d.yValues.length - 1]))
.on("mouseover", onMouseOver)
.on("mouseout", onMouseOut);
}
function drawCircles(svg) {
svg
.append("g")
.selectAll("circle")
.data(chartData)
.join("circle")
.attr("class", d => `${d.code}`)
.attr("fill", d => color(d.region))
.attr("fill-opacity", params.opacitySteady)
.attr("cx", d => x(d.yValues.length - 1))
.attr("cy", d => y(d.yValues[d.yValues.length - 1]))
.attr("r", 3)
.on("mouseover", onMouseOver)
.on("mouseout", onMouseOut);
}
function drawLines(svg) {
svg
.append("g")
.selectAll("path")
.data(chartData)
.join("path")
.attr("class", d => `${d.code}`)
.attr("stroke", d => color(d.region))
.attr("fill", "none")
.attr("stroke-width", 1)
.attr("stroke-opacity", params.opacitySteady)
.attr("d", d => getLinePath(d.yValues))
.on("mouseover", onMouseOver)
.on("mouseout", onMouseOut);
}
function getLinePath(d) {
const path = d3.line();
return path(d.map(function(e, i) { return [x(i), y(e)] }));
}
color = d3
.scaleOrdinal(data.map(d => d.region), d3.schemeCategory10)
.unknown("black")
params = ({
width: 600,
height: 400,
ticksScale: 80,
margin: { top: 30, right: 80, bottom: 45, left: 40 },
yMin: 0,
yMax: roundToNearest(getMax(chartData.map(i => getMax(i.yValues))), 200),
xMin: 0,
xMax: getMax(chartData.map(i => i.yValues.length)),
opacitySteady: 0.6,
opacityHover: 1.0,
opacityOut: 0.1
})
yAxis = g =>
g
.attr("transform", `translate(${params.margin.left},0)`)
.call(
d3
.axisLeft(y)
.ticks(params.height / params.ticksScale, ",")
.tickFormat(d3.formatLocale(pt_BR).format(",d"))
)
.call(g =>
g
.append("text")
.attr("font-size", 12)
.attr("x", -params.margin.left)
.attr("y", params.margin.top - 15)
.attr("fill", "currentColor")
.attr("text-anchor", "start")
.text(`${yLabels.filter(l => l.value == `${ySelection}`)[0].label}`)
)
//y = d3.scaleLog([params.ymin, params.ymax], [params.height - params.margin.bottom, params.margin.top])
y = d3
.scaleLinear()
.domain([params.yMin, params.yMax])
.range([params.height - params.margin.bottom, params.margin.top])
xAxis = g =>
g
.attr("transform", `translate(0,${params.height - params.margin.bottom})`)
.call(d3.axisBottom(x).ticks(width / params.ticksScale))
.call(g =>
g
.append("text")
.attr("x", params.width)
.attr("y", params.margin.bottom - 5)
.attr("font-size", 12)
.attr("fill", "currentColor")
.attr("text-anchor", "end")
.text(`Dias (desde o primeiro caso confirmado)`)
)
x = d3
.scaleLinear()
.domain([params.xMin, params.xMax])
.range([params.margin.left, params.width - params.margin.right])
chartData = data
.filter(
d => regionSelection.includes(d.region) && stateSelection.includes(d.code)
)
.slice(0)
.map(function(d) {
const values = d[ySelection].slice(0).map(d => d[1]);
d.yTotal = values.reduce((acc, i) => (acc += i), 0);
if (yRawOrRolling === "yRaw") {
d.yValues = values;
} else if (yRawOrRolling === "y7dRollAvg") {
d.yValues = rollingAvg(values, 7);
}
return d;
})
data = dataCsv.slice(0).reduce((acc, obj) => {
if (obj.date > updates[obj.state]) return acc; // ignore csv lines with dates posterior to the latest update
let idx = acc.map(i => i.code).indexOf(obj.state);
if (idx == -1) return acc; // ignore eventual csv lines without one of the 27 Brazilian states
let dateIdx = acc[idx]["confirmed"].map(i => i[0]).indexOf(obj.date);
if (dateIdx >= 0) {
acc[idx]["confirmed"][dateIdx][1] += parseInt(obj.new_confirmed);
acc[idx]["deaths"][dateIdx][1] += parseInt(obj.new_deaths);
} else {
acc[idx]["confirmed"].push([obj.date, parseInt(obj.new_confirmed)]);
acc[idx]["deaths"].push([obj.date, parseInt(obj.new_deaths)]);
}
return acc;
}, dataTemplate)
dataCsv = d3.csvParse(pako.inflate(gzData.data, { to: 'string' }))
gzData = axios({
method: 'get',
url: 'https://data.brasil.io/dataset/covid19/caso_full.csv.gz',
responseType: 'arraybuffer'
})
// data source: https://data.brasil.io/dataset/covid19/_meta/list.html
// references / tips
// https://github.com/googleapis/google-api-nodejs-client/issues/1777
// https://stackoverflow.com/questions/49040247/download-binary-file-with-axios#comment98082293_50220546
// https://github.com/axios/axios/issues/448
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