svg = d3.create("svg").attr("viewBox", [0, 0, width, 500])
countries = svg
.append("g")
.selectAll("path")
.data(bn)
.enter()
.append("path")
.attr("d", d3.geoPath().projection(projection))
.attr("fill", "none")
.attr("stroke", "#404040ff")
circles = svg
.append("g")
.selectAll("circle")
.data(n2j.features)
.enter()
.append("circle")
.attr("cx", f => projection(f.geometry.coordinates)[0])
.attr("cy", f => projection(f.geometry.coordinates)[1])
.attr("r", f => 0.000055 * Math.sqrt(f.properties.ar))
.attr("fill", "#ffffff00")
.attr("stroke", "#40404000")
{
circles.append("title").text(
f => `${f.properties.na}
${sizeInd[f.properties.id]} inhabitants in 2018
Variation: ${colInd[f.properties.id]}‰`
);
}
setTimeout(function() {
//hide countries
countries
.transition()
.duration(1000)
.attr("stroke", "#40404000");
//show circles
circles
.transition()
.duration(1000)
.attr("fill", "#ffffff44")
.attr("stroke", "#404040ff");
circles
.on("mouseover", function(rg) {
d3.select(this).attr("fill", "purple");
})
.on("mouseout", function() {
d3.select(this).attr("fill", "#fdbf6faa");
});
}, 1000)
setTimeout(function() {
circles
.transition()
.duration(1500)
.attr("r", f => toRadius(+sizeInd[f.properties.id]))
.attr("fill", f => colorScale(+colInd[f.properties.id]))
.attr("stroke", "#40404030");
circles.on("mouseout", function() {
d3.select(this).attr("fill", f => colorScale(+colInd[f.properties.id]));
});
}, 2500)
setTimeout(function() {
const simulation = d3
.forceSimulation(n2j.features)
.force("x", d3.forceX().x(f => projection(f.geometry.coordinates)[0]))
.force("y", d3.forceY().y(f => projection(f.geometry.coordinates)[1]))
.force(
"collide",
d3.forceCollide().radius(f => toRadius(+sizeInd[f.properties.id]))
);
//set initial position of the circles
for (const f of n2j.features) {
f.x = projection(f.geometry.coordinates)[0];
f.y = projection(f.geometry.coordinates)[1];
}
simulation.on("tick", () => {
circles.attr("cx", f => f.x).attr("cy", f => f.y);
});
invalidation.then(() => simulation.stop());
}, 3000)
setTimeout(function() {
//circle color
svg
.append("g")
.attr("transform", "translate(20,20)")
.append(() =>
legend({
color: colorScale,
title: "Population change (‰)",
width: 260
})
);
//circle size
const legC = svg
.append("g")
.attr("fill", "#444")
.attr("transform", "translate(50,130)")
.attr("text-anchor", "right")
.style("font", "10px sans-serif")
.selectAll("g")
.data([20e6, 10e6, 1e6])
.join("g");
legC
.append("circle")
.attr("fill", "none")
.attr("stroke", "#444")
.attr("cy", d => -toRadius(d))
.attr("r", toRadius);
legC
.append("text")
.attr("y", d => -10 - 2 * toRadius(d))
.attr("x", 30)
.attr("dy", "1.3em")
.text(d3.format(".1s"));
}, 4500)
//TODO make it possible to change year and nuts level
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