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license: mit |
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[{"id" : 1, "name": "A", "value": 10, "date": "2016-01"}, | |
{"id" : 2, "name": "B", "value": 30, "date": "2016-02"}, | |
{"id" : 3, "name": "C", "value": 20, "date": "2016-03"}, | |
{"id" : 4, "name": "D", "value": 40, "date": "2016-04"}, | |
{"id" : 5, "name": "E", "value": 50, "date": "2016-05"}, | |
{"id" : 6, "name": "F", "value": 20, "date": "2016-06"}, | |
{"id" : 7, "name": "G", "value": 10, "date": "2016-07"}, | |
{"id" : 8, "name": "H", "value": 80, "date": "2016-08"}, | |
{"id" : 9, "name": "I", "value": 30, "date": "2016-09"}, | |
{"id" : 10, "name": "J", "value": 70, "date": "2016-10"}, | |
{"id" : 11, "name": "K", "value": 90, "date": "2016-11"}, | |
{"id" : 12, "name": "L", "value": 40, "date": "2016-12"} | |
] |
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<!DOCTYPE html> | |
<head> | |
<meta charset="utf-8"> | |
<script src="https://d3js.org/d3.v4.js"></script> | |
<style> | |
body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } | |
.line { | |
fill: none; | |
stroke: black; | |
stroke-width: 1.5px; | |
} | |
</style> | |
</head> | |
<body> | |
<script> | |
// Margin setup | |
var margin = {top: 20, right: 30, bottom: 20, left: 100}, | |
width = 760 - margin.left - margin.right, | |
height = 300 - margin.top - margin.bottom; | |
// Basic SVG canvas | |
var svg = d3.select("body").append("svg") | |
.attr("width", width + margin.left + margin.right) | |
.attr("height", height + margin.top + margin.bottom) | |
.append("g") | |
.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
// http://bl.ocks.org/zanarmstrong/raw/05c1e95bf7aa16c4768e/ | |
var parseDate = d3.timeParse("%Y-%m"); | |
var displayDate = d3.timeFormat("%b %y"); | |
var displayValue = d3.format(",.0f"); | |
// Temporal scale | |
var x = d3.scaleTime() | |
.range([0, width]); | |
// Linear scale | |
var y = d3.scaleLinear() | |
.range([height, height - 200]); | |
var line = d3.line() | |
.x(function(d) { return x(d.date); }) | |
.y(function(d) { return y(d.value); }); | |
var g = svg.append("g") | |
.attr("transform", "translate(10, 0)"); | |
d3.json("dataset.json", function(data) { | |
// Pre-processing | |
// {"id" : 1, "name": "A", "value": 10, "date": "2016-01"} | |
data.forEach(function(d) { | |
d.value = +d.value; | |
d["date"] = parseDate(d["date"]); | |
}); | |
x.domain(d3.extent(data, function(d) { return d.date; })); | |
y.domain([0, d3.max(data, function(d) { return d.value; })]); | |
svg.selectAll("text").data(data).enter() | |
.append("text") | |
.attr("y", 420) | |
.attr("x", function(d) { return x(d.date); }) | |
.attr("id", "") | |
.style("font-size", 10) | |
.style("font-family", "monospace") | |
.text(function(d, i) { return d.date; }); | |
g.selectAll(".value").data([data[data.length -1]]).enter() | |
.append("text") | |
.attr("class", "value") | |
.attr("y", function(d) { return y(d.value); }) | |
.attr("x", width - 20) | |
.style("font-size", 20) | |
.style("font-family", "monospace") | |
.text(function(d, i) { return d.value; }); | |
g.selectAll("circle").data(data).enter() | |
.append("circle") | |
.attr("cx", function(d) { return x(d.date); }) | |
.attr("cy", function(d) { return y(d.value); }) | |
.attr("r", function(d, i) { return 5; }) | |
.attr("id", function(d) { return d.id; }) | |
.style("fill", "#fcb0b5") | |
.on("mouseover", function(d){ | |
d3.select(this).transition().duration(200).style("fill", "#d30715"); | |
g.selectAll("#tooltip").data([d]).enter().append("text") | |
.attr("id", "tooltip") | |
.text(function(d, i) { return d.value; }) | |
.attr("y", function(d) {return y(d.value) - 12}) | |
.attr("x", function(d) { return x(d.date); }) | |
g.selectAll("#tooltip_path").data([d]).enter().append("line") | |
.attr("id", "tooltip_path") | |
.attr("class", "line") | |
.attr("d", line) | |
.attr("x1", function(d) {return x(d.date)}) | |
.attr("x2", function(d) {return x(d.date)}) | |
.attr("y1", height) | |
.attr("y2", function(d) {return y(d.value)}) | |
.attr("stroke", "black") | |
.style("stroke-dasharray", ("3, 3")); | |
}) | |
.on("mouseout", function(d) { | |
d3.select(this).transition().duration(500).style("fill", "#fcb0b5"); | |
g.selectAll("#tooltip").remove(); | |
g.selectAll("#tooltip_path").remove(); | |
}); | |
g.selectAll("path").data([data]).enter().append("path") | |
.attr("class", "line") | |
.attr("d", line); | |
svg.append("g") | |
.attr("class", "axis axis--x") | |
.attr("transform", "translate(0," + height + ")") | |
.call(d3.axisBottom(x)); | |
}); | |
</script> | |
</body> |
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