This line chart is constructed from a TSV file storing the daily average temperatures of New York, San Francisco and Austin over the last year. The chart employs conventional margins and a number of D3 features:
forked from mbostock's block: Multi-Series Line Chart
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<meta charset="utf-8">
<style>
.axis--x path {
display: none;
}
.line {
fill: none;
stroke: steelblue;
stroke-width: 1.5px;
}
.citytext {
cursor: pointer;
}
</style>
<svg width="960" height="500"></svg>
<script src="//d3js.org/d3.v4.min.js"></script>
<script>
var svg = d3.select("svg"),
margin = {top: 20, right: 80, bottom: 30, left: 50},
width = svg.attr("width") - margin.left - margin.right,
height = svg.attr("height") - margin.top - margin.bottom,
g = svg.append("g").attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var parseTime = d3.timeParse("%Y%m%d");
var x = d3.scaleTime().range([0, width]),
y = d3.scaleLinear().range([height, 0]),
z = d3.scaleOrdinal(d3.schemeCategory10);
var line = d3.line()
.curve(d3.curveBasis)
.y(function(d) { return y(d.temperature); });
var xGroup = g.append("g").attr("transform", "translate(0," + height + ")");
var xAxis = d3.axisBottom(x);
var zoom = d3.zoom()
.scaleExtent([1 / 4, 8])
.translateExtent([[-width, -Infinity], [2 * width, Infinity]])
.on("zoom", zoomed);
var zoomRect = svg
.append("rect")
.attr("width", width)
.attr("height", height)
.attr("fill", "none")
.attr("pointer-events", "all")
.call(zoom);
g.append("clipPath")
.attr("id", "clip")
.append("rect")
.attr("width", width)
.attr("height", height);
var chartbody = svg.append("g").attr("clip-path", "url(#clip)").attr("transform", "translate(" + margin.left + "," + margin.top + ")");
d3.tsv("data.tsv", type, function(error, data) {
if (error) throw error;
var cities = data.columns.slice(1).map(function(id) {
return {
id: id,
values: data.map(function(d) {
return {date: d.date, temperature: d[id]};
})
};
});
x.domain(d3.extent(data, function(d) {return d.date; }));
y.domain([
d3.min(cities, function(c) { return d3.min(c.values, function(d) { return d.temperature; }); }),
d3.max(cities, function(c) { return d3.max(c.values, function(d) { return d.temperature; }); })
]);
z.domain(cities.map(function(c) { return c.id; }));
xGroup.attr("class", "axis axis--x")
.call(xAxis);
g.append("g")
.attr("class", "axis axis--y")
.call(d3.axisLeft(y))
.append("text")
.attr("transform", "rotate(-90)")
.attr("y", 6)
.attr("dy", "0.71em")
.attr("fill", "#000")
.text("Temperature, ºF");
var city = chartbody.selectAll(".city")
.data(cities)
.enter().append("g")
.attr("class", "city")
.attr("id", function(d) { return d.id.replace(/\s+/g, '');});
var fortext = g.selectAll(".city")
.data(cities).enter().append("g")
.attr("class", "cityzoomtext")
.attr("id", function(d) { return d.id.replace(/\s+/g, '');});
line.x(function(d) { return x(d.date); });
fortext.append("text")
.attr("class","citytext")
.datum(function(d) { return {id: d.id, value: d.values[d.values.length - 1]}; })
.attr("transform", function(d) { return "translate(" + x(d.value.date) + "," + y(d.value.temperature) + ")"; })
.attr("x", 3)
.attr("dy", "0.35em")
.style("font", "10px sans-serif")
.text(function(d) { return d.id; });
city.append("path")
.attr("class", "line")
.attr("d", function(d) {return line(d.values); })
.style("stroke", function(d) { return z(d.id); });
var lines = d3.select("svg")
.selectAll("g")
.selectAll(".city")
.selectAll(".line");
var citytext = d3.select("svg")
.selectAll("g")
.selectAll(".cityzoomtext")
.selectAll(".citytext");
citytext.on("click", function(outer) {
var me = d3.select(this);
var on = me.classed("on");
var mouseover = me.classed("mouseover");
if(!on) {
var t = d3.transition();
lines.filter(function(d) {
return outer.id != d.id;
})
.transition(t)
.style("stroke", function(d) { return z(d.id); })
lines.filter(function(d) {
return outer.id === d.id;
})
.transition()
.style("opacity","0")
.on("end", function(d) {
d3.select(this).style("visibility","hidden");
})
}
else {
d3.select("svg")
.selectAll("g#" + outer.id.replace(/\s+/g, ''))
.select("path").raise();
lines.filter(function(d) {
return outer.id != d.id;
})
.transition(t)
.style("stroke", "lightgray");
lines.filter(function(d) {
return outer.id === d.id;
})
.style("visibility", "visible")
.transition()
.style("opacity", 1);
}
me.classed("on",!on);
});
citytext.on("mouseover", function(outer) {
var t = d3.transition();
var me = d3.select(this);
var on = me.classed("on");
if(!on) {
d3.select("svg")
.selectAll("g#" + outer.id.replace(/\s+/g, ''))
.select("path").raise();
lines.filter(function(d) {
return outer.id != d.id;
})
.transition(t)
.style("stroke", "lightgray");
}
});
citytext.on("mouseout", function(outer) {
var me = d3.select(this);
var mouseout = me.classed("mouseout");
if(!mouseout) {
var t = d3.transition();
lines.filter(function(d) {
return outer.id != d.id;
})
.transition(t)
.style("stroke", function(d) { return z(d.id); })
}
})
// var voronoi = d3.voronoi()
// .x(function(d) { return x(d.date); })
// .y(function(d) { return y(d.temperature); })
// .extent([[-margin.left, -margin.top], [width + margin.right, height + margin.bottom]]);
// var vg = chartbody
// .attr("id", "voronoi")
// .attr("transform", translate(margin.left, margin.top))
// .style("pointer-events", "all");
var all1 = d3.merge(data.map(function(outer) { return cities[0].values;}));
var all2 = d3.merge(data.map(function(outer) { return cities[1].values;}));
var all3 = d3.merge(data.map(function(outer) { return cities[2].values;}));
var all = all1.concat(all2,all3);
console.log(all);
// vg.selectAll("path")
// .data(voronoi.polygons(all))
// .enter()
// .append("path")
// // .attr("id", function(d) { d.district })
// .attr("d", function(d) { return d ? "M" + d.join("L") + "Z" : null; })
// .style("fill", "none")
// .style("stroke", "green")
// .on("mouseover", function(inner) {
// // d3.select(inner.data.point).style("visibility", "visible");
// })
// .on("mouseout", function(inner) {
// // d3.select(inner.data.point).style("visibility", "hidden");
// });
// console.log(newdata[0][1]);
});
function type(d, _, columns) {
d.date = parseTime(d.date);
for (var i = 1, n = columns.length, c; i < n; ++i) d[c = columns[i]] = +d[c];
return d;
}
function translate(x, y) {
return "translate(" + String(x) + "," + String(y) + ")";
}
function zoomed() {
var xz = d3.event.transform.rescaleX(x);
xGroup.call(xAxis.scale(xz));
var linesel = d3.select('svg').selectAll('g').selectAll(".city").selectAll(".line").remove();
d3.tsv("data.tsv", type, function(error, data) {
if (error) throw error;
var cities = data.columns.slice(1).map(function(id) {
return {
id: id,
values: data.map(function(d) {
return {date: d.date, temperature: d[id]};
})
};
});
line.x(function(d) { return xz(d.date); });
svg.selectAll(".city").append("path")
.attr("class", "line")
.attr("d", function(d) {return line(d.values); })
.style("stroke", function(d) { return z(d.id); })
.style("visibility", function(d) {
var me = d3.select(this);
var on = me.classed("on");
if(on) {
return "hidden";
}
else {
return "visible";
}
});
var lines = d3.select("svg")
.selectAll("g")
.selectAll(".city")
.selectAll(".line");
var citytext = d3.select("svg")
.selectAll("g")
.selectAll(".cityzoomtext")
.selectAll(".citytext");
citytext.on("click", function(outer) {
var me = d3.select(this);
var on = me.classed("on");
var mouseover = me.classed("mouseover");
if(!on) {
var t = d3.transition();
lines.filter(function(d) {
return outer.id != d.id;
})
.transition(t)
.style("stroke", function(d) { return z(d.id); })
lines.filter(function(d) {
return outer.id === d.id;
})
.transition()
.style("opacity","0")
.on("end", function(d) {
d3.select(this).style("visibility","hidden");
})
}
else {
d3.select("svg")
.selectAll("g#" + outer.id.replace(/\s+/g, ''))
.select("path").raise();
lines.filter(function(d) {
return outer.id != d.id;
})
.transition(t)
.style("stroke", "lightgray");
lines.filter(function(d) {
return outer.id === d.id;
})
.style("visibility", "visible")
.transition()
.style("opacity", 1);
}
me.classed("on",!on);
});
citytext.on("mouseover", function(outer) {
var t = d3.transition();
var me = d3.select(this);
var on = me.classed("on");
if(!on) {
d3.select("svg")
.selectAll("g#" + outer.id.replace(/\s+/g, ''))
.select("path").raise();
lines.filter(function(d) {
return outer.id != d.id;
})
.transition(t)
.style("stroke", "lightgray");
}
});
citytext.on("mouseout", function(outer) {
var me = d3.select(this);
var mouseout = me.classed("mouseout");
if(!mouseout) {
var t = d3.transition();
lines.filter(function(d) {
return outer.id != d.id;
})
.transition(t)
.style("stroke", function(d) { return z(d.id); })
}
})
});
}
</script>
https://d3js.org/d3.v4.min.js